CVE-2023-44487: Distributed Denial of Service (DDoS) Attacks against HTTP/2 #3947
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…lease-2.8.x) (#10891) [](https://renovatebot.com) This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | golang.org/x/net | indirect | minor | `v0.7.0` -> `v0.17.0` | --- ### Improper rendering of text nodes in golang.org/x/net/html [CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) / [GHSA-2wrh-6pvc-2jm9](https://togithub.com/advisories/GHSA-2wrh-6pvc-2jm9) <details> <summary>More information</summary> #### Details Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack. #### Severity - CVSS Score: 6.1 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) - [https://go.dev/cl/514896](https://go.dev/cl/514896) - [https://go.dev/issue/61615](https://go.dev/issue/61615) - [https://pkg.go.dev/vuln/GO-2023-1988](https://pkg.go.dev/vuln/GO-2023-1988) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-2wrh-6pvc-2jm9) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Improper rendering of text nodes in golang.org/x/net/html [CVE-2023-3978](https://nvd.nist.gov/vuln/detail/CVE-2023-3978) / [GHSA-2wrh-6pvc-2jm9](https://togithub.com/advisories/GHSA-2wrh-6pvc-2jm9) / [GO-2023-1988](https://pkg.go.dev/vuln/GO-2023-1988) <details> <summary>More information</summary> #### Details Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack. #### Severity Unknown #### References - [https://go.dev/issue/61615](https://go.dev/issue/61615) - [https://go.dev/cl/514896](https://go.dev/cl/514896) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-1988) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### swift-nio-http2 vulnerable to HTTP/2 Stream Cancellation Attack [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) <details> <summary>More information</summary> #### Details swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [Azure/AKS#3947 - [akka/akka-http#4323 - [alibaba/tengine#1872 - [apache/apisix#10320 - [caddyserver/caddy#5877 - [dotnet/announcements#277 - [jetty/jetty.project#10679 - [etcd-io/etcd#16740 - [golang/go#63417 - [haproxy/haproxy#2312 - [hyperium/hyper#3337 - [junkurihara/rust-rpxy#97 - [kazu-yamamoto/http2#93 - [ninenines/cowboy#1615 - [openresty/openresty#930 - [opensearch-project/data-prepper#3474 - [tempesta-tech/tempesta#1986 - [varnishcache/varnish-cache#3996 - [apache/httpd-site#10 - [apache/trafficserver#10564 - [envoyproxy/envoy#30055 - [facebook/proxygen#466 - [grpc/grpc-go#6703 - [h2o/h2o#3291 - [kubernetes/kubernetes#121120 - [line/armeria#5232 - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [microsoft/azurelinux#6381 - [nghttp2/nghttp2#1961 - [nodejs/node#50121 - [projectcontour/contour#5826 - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Moderate #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [golang/go#63417 - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - "" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/grafana/loki). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy44LjEiLCJ1cGRhdGVkSW5WZXIiOiIzNy4xOS4yIiwidGFyZ2V0QnJhbmNoIjoicmVsZWFzZS0yLjgueCJ9--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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Hey @miwithro any update on: Ubuntu is still being "Triaged" |
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Hello, We have DDoS Network Protection enabled on all our Azure subscriptions, which covers all public IPs in those subscriptions. Currently, we have public IPs associated with AKS public endpoints. Considering our DDoS Network Protection configuration, could someone please clarify if we are already protected against this reported vulnerability, or do we still need to take additional measures to address the issue? |
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@vaibhav-storebrand are you running windows node pools? If not then you are ok. But either way you should be updating the node image regularly like you would a normal server. With windows a new node image is released about once a month. With Linux about once a week. |
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@PixelRobots We have Linux nodes and we update node images regularly. That means we are protected. |
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@vaibhav-storebrand that's good news. |
mend-for-github-com bot
added a commit
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that referenced
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Jan 10, 2024
This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | golang.org/x/net | `v0.13.0` -> `v0.17.0` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | ### GitHub Vulnerability Alerts #### [CVE-2023-39325](https://togithub.com/golang/go/issues/63417) A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### [CVE-2023-44487](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) ## HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ## swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity - CVSS Score: 7.5 / 10 (High) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [golang/go#63417 - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/](https://lists.fedoraproject.org/archives/list/[email protected]/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/](https://lists.fedoraproject.org/archives/list/[email protected]/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/](https://lists.fedoraproject.org/archives/list/[email protected]/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/](https://lists.fedoraproject.org/archives/list/[email protected]/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/[email protected]/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/](https://lists.fedoraproject.org/archives/list/[email protected]/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/](https://lists.fedoraproject.org/archives/list/[email protected]/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/](https://lists.fedoraproject.org/archives/list/[email protected]/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/](https://lists.fedoraproject.org/archives/list/[email protected]/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/](https://lists.fedoraproject.org/archives/list/[email protected]/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/](https://lists.fedoraproject.org/archives/list/[email protected]/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/](https://lists.fedoraproject.org/archives/list/[email protected]/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/](https://lists.fedoraproject.org/archives/list/[email protected]/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231110-0008/](https://security.netapp.com/advisory/ntap-20231110-0008/) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### HTTP/2 Stream Cancellation Attack BIT-apisix-2023-44487 / BIT-aspnet-core-2023-44487 / BIT-contour-2023-44487 / BIT-dotnet-2023-44487 / BIT-dotnet-sdk-2023-44487 / BIT-envoy-2023-44487 / BIT-golang-2023-44487 / BIT-jenkins-2023-44487 / BIT-kong-2023-44487 / BIT-nginx-2023-44487 / BIT-nginx-ingress-controller-2023-44487 / BIT-node-2023-44487 / BIT-solr-2023-44487 / BIT-tomcat-2023-44487 / BIT-varnish-2023-44487 / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-2m7v-gc89-fjqf](https://togithub.com/advisories/GHSA-2m7v-gc89-fjqf) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) / [GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) / [GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) <details> <summary>More information</summary> #### Details ##### HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ##### swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [Azure/AKS#3947 - [akka/akka-http#4323 - [alibaba/tengine#1872 - [apache/apisix#10320 - [caddyserver/caddy#5877 - [dotnet/announcements#277 - [jetty/jetty.project#10679 - [etcd-io/etcd#16740 - [golang/go#63417 - [haproxy/haproxy#2312 - [hyperium/hyper#3337 - [junkurihara/rust-rpxy#97 - [kazu-yamamoto/http2#93 - [ninenines/cowboy#1615 - [openresty/openresty#930 - [opensearch-project/data-prepper#3474 - [tempesta-tech/tempesta#1986 - [varnishcache/varnish-cache#3996 - [apache/httpd-site#10 - [apache/trafficserver#10564 - [envoyproxy/envoy#30055 - [facebook/proxygen#466 - [grpc/grpc-go#6703 - [h2o/h2o#3291 - [kubernetes/kubernetes#121120 - [line/armeria#5232 - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [microsoft/azurelinux#6381 - [nghttp2/nghttp2#1961 - [nodejs/node#50121 - [projectcontour/contour#5826 - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715](https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/grpc/grpc-go/releases](https://togithub.com/grpc/grpc-go/releases) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - 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[https://lists.fedoraproject.org/archives/list/[email protected]/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/[email protected]/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/[email protected]/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/[email protected]/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12](https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12) - [https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94](https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94) - [https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81](https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.debian.org/security/2023/dsa-5540](https://www.debian.org/security/2023/dsa-5540) - [https://www.debian.org/security/2023/dsa-5549](https://www.debian.org/security/2023/dsa-5549) - [https://www.debian.org/security/2023/dsa-5558](https://www.debian.org/security/2023/dsa-5558) - [https://www.debian.org/security/2023/dsa-5570](https://www.debian.org/security/2023/dsa-5570) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) - [http://www.openwall.com/lists/oss-security/2023/10/18/4](http://www.openwall.com/lists/oss-security/2023/10/18/4) - [http://www.openwall.com/lists/oss-security/2023/10/18/8](http://www.openwall.com/lists/oss-security/2023/10/18/8) - [http://www.openwall.com/lists/oss-security/2023/10/19/6](http://www.openwall.com/lists/oss-security/2023/10/19/6) - [http://www.openwall.com/lists/oss-security/2023/10/20/8](http://www.openwall.com/lists/oss-security/2023/10/20/8) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - 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This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | golang.org/x/net | `v0.13.0` -> `v0.17.0` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | ### GitHub Vulnerability Alerts #### [CVE-2023-39325](https://togithub.com/golang/go/issues/63417) A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### [CVE-2023-44487](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) ## HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ## swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity Unknown #### References - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) This data is provided by [OSV](https://osv.dev/vulnerability/GO-2023-2102) and the [Go Vulnerability Database](https://togithub.com/golang/vulndb) ([CC-BY 4.0](https://togithub.com/golang/vulndb#license)). </details> --- ### HTTP/2 Stream Cancellation Attack BIT-apisix-2023-44487 / BIT-aspnet-core-2023-44487 / BIT-contour-2023-44487 / BIT-dotnet-2023-44487 / BIT-dotnet-sdk-2023-44487 / BIT-envoy-2023-44487 / BIT-golang-2023-44487 / BIT-jenkins-2023-44487 / BIT-kong-2023-44487 / BIT-nginx-2023-44487 / BIT-nginx-ingress-controller-2023-44487 / BIT-node-2023-44487 / BIT-solr-2023-44487 / BIT-tomcat-2023-44487 / BIT-varnish-2023-44487 / [CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) / [GHSA-2m7v-gc89-fjqf](https://togithub.com/advisories/GHSA-2m7v-gc89-fjqf) / [GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) / [GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) / [GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) <details> <summary>More information</summary> #### Details ##### HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RST_STREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The client may also assume that the cancellation will take effect immediately when the server receives the RST_STREAM frame, before any other data from that TCP connection is processed. Abuse of this feature is called a Rapid Reset attack because it relies on the ability for an endpoint to send a RST_STREAM frame immediately after sending a request frame, which makes the other endpoint start working and then rapidly resets the request. The request is canceled, but leaves the HTTP/2 connection open. The HTTP/2 Rapid Reset attack built on this capability is simple: The client opens a large number of streams at once as in the standard HTTP/2 attack, but rather than waiting for a response to each request stream from the server or proxy, the client cancels each request immediately. The ability to reset streams immediately allows each connection to have an indefinite number of requests in flight. By explicitly canceling the requests, the attacker never exceeds the limit on the number of concurrent open streams. The number of in-flight requests is no longer dependent on the round-trip time (RTT), but only on the available network bandwidth. In a typical HTTP/2 server implementation, the server will still have to do significant amounts of work for canceled requests, such as allocating new stream data structures, parsing the query and doing header decompression, and mapping the URL to a resource. For reverse proxy implementations, the request may be proxied to the backend server before the RST_STREAM frame is processed. The client on the other hand paid almost no costs for sending the requests. This creates an exploitable cost asymmetry between the server and the client. Multiple software artifacts implementing HTTP/2 are affected. This advisory was originally ingested from the `swift-nio-http2` repo advisory and their original conent follows. ##### swift-nio-http2 specific advisory swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors. #### Severity - CVSS Score: 5.3 / 10 (Medium) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L` #### References - [https://github.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/apple/swift-nio-http2/security/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf](https://togithub.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf) - [https://nvd.nist.gov/vuln/detail/CVE-2023-44487](https://nvd.nist.gov/vuln/detail/CVE-2023-44487) - [Azure/AKS#3947 - [akka/akka-http#4323 - [alibaba/tengine#1872 - [apache/apisix#10320 - [caddyserver/caddy#5877 - [dotnet/announcements#277 - [jetty/jetty.project#10679 - [etcd-io/etcd#16740 - [golang/go#63417 - [haproxy/haproxy#2312 - [hyperium/hyper#3337 - [junkurihara/rust-rpxy#97 - [kazu-yamamoto/http2#93 - [ninenines/cowboy#1615 - [openresty/openresty#930 - [opensearch-project/data-prepper#3474 - [tempesta-tech/tempesta#1986 - [varnishcache/varnish-cache#3996 - [apache/httpd-site#10 - [apache/trafficserver#10564 - [envoyproxy/envoy#30055 - [facebook/proxygen#466 - [grpc/grpc-go#6703 - [h2o/h2o#3291 - [kubernetes/kubernetes#121120 - [line/armeria#5232 - [https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632](https://togithub.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632) - [microsoft/azurelinux#6381 - [nghttp2/nghttp2#1961 - [nodejs/node#50121 - [projectcontour/contour#5826 - [https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1](https://togithub.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1) - [https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61](https://togithub.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61) - [https://access.redhat.com/security/cve/cve-2023-44487](https://access.redhat.com/security/cve/cve-2023-44487) - [https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/](https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/) - [https://aws.amazon.com/security/security-bulletins/AWS-2023-011/](https://aws.amazon.com/security/security-bulletins/AWS-2023-011/) - [https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/](https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/) - [https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/](https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/) - [https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/](https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/) - [https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack](https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack) - [https://blog.vespa.ai/cve-2023-44487/](https://blog.vespa.ai/cve-2023-44487/) - [https://bugzilla.proxmox.com/show_bug.cgi?id=4988](https://bugzilla.proxmox.com/show_bug.cgi?id=4988) - [https://bugzilla.redhat.com/show_bug.cgi?id=2242803](https://bugzilla.redhat.com/show_bug.cgi?id=2242803) - [https://bugzilla.suse.com/show_bug.cgi?id=1216123](https://bugzilla.suse.com/show_bug.cgi?id=1216123) - [https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9](https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9) - [https://chaos.social/@​icing/111210915918780532](https://chaos.social/@​icing/111210915918780532) - [https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/](https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/) - [https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack](https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack) - [https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125](https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125) - [https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715](https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715) - [https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve](https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve) - [https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764](https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764) - [https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088](https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088) - [https://github.com/Kong/kong/discussions/11741](https://togithub.com/Kong/kong/discussions/11741) - [https://github.com/advisories/GHSA-qppj-fm5r-hxr3](https://togithub.com/advisories/GHSA-qppj-fm5r-hxr3) - [https://github.com/advisories/GHSA-vx74-f528-fxqg](https://togithub.com/advisories/GHSA-vx74-f528-fxqg) - [https://github.com/advisories/GHSA-xpw8-rcwv-8f8p](https://togithub.com/advisories/GHSA-xpw8-rcwv-8f8p) - [https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113](https://togithub.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113) - [https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2](https://togithub.com/apache/tomcat/tree/main/java/org/apache/coyote/http2) - [https://github.com/apple/swift-nio-http2](https://togithub.com/apple/swift-nio-http2) - [https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487](https://togithub.com/arkrwn/PoC/tree/main/CVE-2023-44487) - [https://github.com/bcdannyboy/CVE-2023-44487](https://togithub.com/bcdannyboy/CVE-2023-44487) - [https://github.com/caddyserver/caddy/releases/tag/v2.7.5](https://togithub.com/caddyserver/caddy/releases/tag/v2.7.5) - [https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73](https://togithub.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73) - [https://github.com/grpc/grpc-go/releases](https://togithub.com/grpc/grpc-go/releases) - [https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244](https://togithub.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244) - [https://github.com/micrictor/http2-rst-stream](https://togithub.com/micrictor/http2-rst-stream) - [https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0](https://togithub.com/nghttp2/nghttp2/releases/tag/v1.57.0) - [https://github.com/oqtane/oqtane.framework/discussions/3367](https://togithub.com/oqtane/oqtane.framework/discussions/3367) - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://istio.io/latest/news/security/istio-security-2023-004/](https://istio.io/latest/news/security/istio-security-2023-004/) - [https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/](https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/) - [https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q](https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html) - [https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html](https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html) - [https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/](https://lists.fedoraproject.org/archives/list/[email protected]/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/) - 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[https://lists.fedoraproject.org/archives/list/[email protected]/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/](https://lists.fedoraproject.org/archives/list/[email protected]/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/](https://lists.fedoraproject.org/archives/list/[email protected]/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/](https://lists.fedoraproject.org/archives/list/[email protected]/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/) - [https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html](https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html) - [https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html](https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html) - [https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html](https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html) - [https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/](https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/) - [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487) - [https://my.f5.com/manage/s/article/K000137106](https://my.f5.com/manage/s/article/K000137106) - [https://netty.io/news/2023/10/10/4-1-100-Final.html](https://netty.io/news/2023/10/10/4-1-100-Final.html) - [https://news.ycombinator.com/item?id=37830987](https://news.ycombinator.com/item?id=37830987) - [https://news.ycombinator.com/item?id=37830998](https://news.ycombinator.com/item?id=37830998) - [https://news.ycombinator.com/item?id=37831062](https://news.ycombinator.com/item?id=37831062) - [https://news.ycombinator.com/item?id=37837043](https://news.ycombinator.com/item?id=37837043) - [https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/](https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/) - [https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected](https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231016-0001/](https://security.netapp.com/advisory/ntap-20231016-0001/) - [https://security.paloaltonetworks.com/CVE-2023-44487](https://security.paloaltonetworks.com/CVE-2023-44487) - [https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14](https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14) - [https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12](https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.0-M12) - [https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94](https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.94) - [https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81](https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.81) - [https://ubuntu.com/security/CVE-2023-44487](https://ubuntu.com/security/CVE-2023-44487) - [https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/](https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/) - [https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487](https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487) - [https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event](https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event) - [https://www.debian.org/security/2023/dsa-5521](https://www.debian.org/security/2023/dsa-5521) - [https://www.debian.org/security/2023/dsa-5522](https://www.debian.org/security/2023/dsa-5522) - [https://www.debian.org/security/2023/dsa-5540](https://www.debian.org/security/2023/dsa-5540) - [https://www.debian.org/security/2023/dsa-5549](https://www.debian.org/security/2023/dsa-5549) - [https://www.debian.org/security/2023/dsa-5558](https://www.debian.org/security/2023/dsa-5558) - [https://www.debian.org/security/2023/dsa-5570](https://www.debian.org/security/2023/dsa-5570) - [https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487](https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487) - [https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/](https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/) - [https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/](https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/) - [https://www.openwall.com/lists/oss-security/2023/10/10/6](https://www.openwall.com/lists/oss-security/2023/10/10/6) - [https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack](https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack) - [https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/](https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/) - [http://www.openwall.com/lists/oss-security/2023/10/13/4](http://www.openwall.com/lists/oss-security/2023/10/13/4) - [http://www.openwall.com/lists/oss-security/2023/10/13/9](http://www.openwall.com/lists/oss-security/2023/10/13/9) - [http://www.openwall.com/lists/oss-security/2023/10/18/4](http://www.openwall.com/lists/oss-security/2023/10/18/4) - [http://www.openwall.com/lists/oss-security/2023/10/18/8](http://www.openwall.com/lists/oss-security/2023/10/18/8) - [http://www.openwall.com/lists/oss-security/2023/10/19/6](http://www.openwall.com/lists/oss-security/2023/10/19/6) - [http://www.openwall.com/lists/oss-security/2023/10/20/8](http://www.openwall.com/lists/oss-security/2023/10/20/8) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-qppj-fm5r-hxr3) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### HTTP/2 rapid reset can cause excessive work in net/http BIT-golang-2023-39325 / [CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) / [GHSA-4374-p667-p6c8](https://togithub.com/advisories/GHSA-4374-p667-p6c8) / [GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) <details> <summary>More information</summary> #### Details A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. #### Severity - CVSS Score: 7.5 / 10 (High) - Vector String: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` #### References - [https://nvd.nist.gov/vuln/detail/CVE-2023-39325](https://nvd.nist.gov/vuln/detail/CVE-2023-39325) - [golang/go#63417 - [https://go.dev/cl/534215](https://go.dev/cl/534215) - [https://go.dev/cl/534235](https://go.dev/cl/534235) - [https://go.dev/issue/63417](https://go.dev/issue/63417) - [https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ](https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo/m/UDd7VKQuAAAJ) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/3SZN67IL7HMGMNAVLOTIXLIHUDXZK4LH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/](https://lists.fedoraproject.org/archives/list/[email protected]/message/AVZDNSMVDAQJ64LJC5I5U5LDM5753647/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/](https://lists.fedoraproject.org/archives/list/[email protected]/message/D2BBIDR2ZMB3X5BC7SR4SLQMHRMVPY6L/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ECRC75BQJP6FJN2L7KCKYZW4DSBD7QSD/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/](https://lists.fedoraproject.org/archives/list/[email protected]/message/GSY7SXFFTPZFWDM6XELSDSHZLVW3AHK7/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/](https://lists.fedoraproject.org/archives/list/[email protected]/message/HZQIELEIRSZUYTFFH5KTH2YJ4IIQG2KE/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/](https://lists.fedoraproject.org/archives/list/[email protected]/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/](https://lists.fedoraproject.org/archives/list/[email protected]/message/NG7IMPL55MVWU3LCI4JQJT3K2U5CHDV7/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/](https://lists.fedoraproject.org/archives/list/[email protected]/message/OXGWPQOJ3JNDW2XIYKIVJ7N7QUIFNM2Q/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/](https://lists.fedoraproject.org/archives/list/[email protected]/message/QF5QSYAOPDOWLY6DUHID56Q4HQFYB45I/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/](https://lists.fedoraproject.org/archives/list/[email protected]/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/](https://lists.fedoraproject.org/archives/list/[email protected]/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/](https://lists.fedoraproject.org/archives/list/[email protected]/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/](https://lists.fedoraproject.org/archives/list/[email protected]/message/UTT7DG3QOF5ZNJLUGHDNLRUIN6OWZARP/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/](https://lists.fedoraproject.org/archives/list/[email protected]/message/WCNCBYKZXLDFGAJUB7ZP5VLC3YTHJNVH/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/](https://lists.fedoraproject.org/archives/list/[email protected]/message/XTNLSL44Y5FB6JWADSZH6DCV4JJAAEQY/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/](https://lists.fedoraproject.org/archives/list/[email protected]/message/YRKEXKANQ7BKJW2YTAMP625LJUJZLJ4P/) - [https://pkg.go.dev/vuln/GO-2023-2102](https://pkg.go.dev/vuln/GO-2023-2102) - [https://security.gentoo.org/glsa/202311-09](https://security.gentoo.org/glsa/202311-09) - [https://security.netapp.com/advisory/ntap-20231110-0008/](https://security.netapp.com/advisory/ntap-20231110-0008/) - [golang.org/x/net](golang.org/x/net) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-4374-p667-p6c8) and the [GitHub Advisory Database](https://togithub.com/github/advisory-database) ([CC-BY 4.0](https://togithub.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - "" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. 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Hi @miwithro can you precise what fixes have been released? Fixes have been released for awhile no ? |
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https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/
###Summary
Beginning in September 2023, Microsoft was notified by industry partners about a newly identified Distributed Denial-of-Service (DDoS) attack technique being used in the wild targeting HTTP/2 protocol. This vulnerability (CVE-2023-44487) impacts any internet exposed HTTP/2 endpoints. As an industry leader, Microsoft promptly opened an investigation and subsequently began working with industry partners for a coordinated disclosure and mitigation plan. Microsoft recommends customers follow the guidance provided in this blog to ensure your services are hardened and protected against this DDoS attack technique.
This DDoS attack, known as ‘HTTP/2 Rapid Reset’, leverages a flaw in the implementation of HTTP/2. Microsoft promptly created mitigations for IIS (HTTP.sys), .NET (Kestrel), and Windows, which were part of Microsoft Security Updates released on Oct 10th, 2023.
While this DDoS has the potential to impact service availability, it alone does not lead to the compromise of customer data, and at this time we have seen no evidence of customer data being compromised.
Attack Details
This HTTP/2 vulnerability allows malicious actors to launch a DDoS attack targeting HTTP/2 servers. The attack sends a set number of HTTP requests using HEADERS followed by RST_STREAM and repeating this pattern to generate a high volume of traffic on the targeted HTTP/2 servers. By packing multiple HEADERS and RST_STREAM frames in a single connection, attackers can cause a significant increase in the request per second and high CPU utilization on the servers that eventually can cause resource exhaustion.
Am I vulnerable?
All AKS supported versions will be hotfixed. Please upgrade your cluster to a supported version to receive the patch.
If you are running a Public AKS cluster or have public endpoints for the cluster or your applications, you could be vulnerable.
If your AKS node is running a Windows VHD older than 231007 your node will be vulnerable.
Azure Linux and Ubuntu 22.04 are not vulnerable.
AKS Information:
To enhance the security of your public AKS cluster and reduce the risk of exploitation, you are advised to restrict the allowed IP address ranges that can connect to the API server. This can be accomplished by utilizing the API server authorized IP range feature. Furthermore, you are advised to create private clusters to ensure that network traffic exclusively traverses the private network between your API server and node pools, enhancing overall security.
Update your Windows 2019 node image to at least 17763.4974.231007 to remediate this vulnerability.
Update your Windows 2022 node image to at least 20348.2031.231007 to remediate this vulnerability.
Update your Windows 2022-gen2 node image to at least 20348.2031.231007 to remediate this vulnerability.
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