Topic: No renegotiation vulnerabilities

2009-11-12 20:17:01 UTC
Hi! We’ve been getting a number of questions about the high profile vulnerabilities in OpenSSL, GnuTLS, NSS and mod_ssl. This vulnerability is based on a potentially insecure SSL early feature that yaSSL chose to never support in the first place. As such, yaSSL was never insecure. More details on the issue can be found below: From CVE: … -2009-3555 “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, 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.”