The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as
used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in
the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l,
GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS)
3.12.4 and earlier, multiple Cisco products, and other products, does
not properly associate renegotiation handshakes with an existing
connection, which allows man-in-the-middle attackers to insert data
into HTTPS sessions, and possibly other types of sessions protected by
TLS or SSL, by sending an unauthenticated request that is processed
retroactively by a server in a post-renegotiation context, related to
a "plaintext injection" attack, aka the "Project Mogul" issue.
|