HTTP/2 Rapid Reset : CVE-2023-44487 #5877
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I am pretty sure caddy has no rate-limiting built in, so it's not affected by this. |
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This is a vulnerability in the HTTP/2 protocol that is being targeted by DDoS attacks. I don't see what this has to do with a rate-limiting feature. The only thing related to rate limiting seems to me to be the migitation strategy. The real question is at what layer this needs to be addressed. Do we need to wait for a fix in x/net/http2, or is this something that caddy needs to implement itself? Response of nginx: https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/ Apache's migitation strategy: https://chaos.social/@icing/111210915918780532 |
I think yes. I'm trying to keep an eye on Go's announcements to see what they'll say. The vuln and mitigation layer is below Caddy's scope. |
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FWIW, Go 1.21.3 is planned for release today, but mainly to fix an "unrelated" security vuln. So far, there is no mention of CVE-2023-44487 in the Go repo on Github.
Well it seems that |
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Go 1.21.3 will be out shortly, with a mitigation for Rapid Reset. An update to x/net/http2 will follow shortly after. More details will be in the release announcement. |
Glad to hear! Thank you |
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The fix for CVE-2023-44487 has been merged: golang/go#63417 And Go 1.21.3 has been released: https://github.com/golang/go/releases/tag/go1.21.3 🎉 |
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The build server was updated a few minutes ago so running Thank you @neild for the attention and the quick fix! |
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Great work all, thank you |
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Great , thank you |
I'm assuming |
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Yeah, we don't currently have the resources or bandwidth to support older versions currently. If it's absolutely necessary for you to stay behind for some particular reason, then consider a sponsorship to get prioritized support. Otherwise, we always recommend to run the latest version of Caddy. We'll cut a |
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Just in case its helpful to anyone else, it looks like the docker image tag |
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Building with Go |
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Sorry, yeah, been dealing with hospital stuff lately. Will be trying to work on this today though. |
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Release is out: https://github.com/caddyserver/caddy/releases/tag/v2.7.5 |
chaudum
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Oct 17, 2023
…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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- Fix for downstream HTTP/2 Rapid Reset CVE-2023-44487 : caddyserver/caddy#5877
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- Importantly, includes the fix for downstream HTTP/2 Rapid Reset CVE-2023-44487 : caddyserver/caddy#5877
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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 - 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/) - 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[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/) - 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[https://lists.fedoraproject.org/archives/list/[email protected]/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/) - [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/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/](https://lists.fedoraproject.org/archives/list/[email protected]/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/](https://lists.fedoraproject.org/archives/list/[email protected]/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [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/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/[email protected]/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/[email protected]/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [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/) - 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[https://lists.fedoraproject.org/archives/list/[email protected]/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/](https://lists.fedoraproject.org/archives/list/[email protected]/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/](https://lists.fedoraproject.org/archives/list/[email protected]/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/) - [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/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/](https://lists.fedoraproject.org/archives/list/[email protected]/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/) - [https://lists.fedoraproject.org/archives/list/[email protected]/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/](https://lists.fedoraproject.org/archives/list/[email protected]/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/) - [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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Is caddy patched or vulnerable to the attack.
See : CVE-2023-44487
https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/
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