Unless I'm mistaken, the following memcmp is vulnerable to a remote timing attack. https://github.com/openssl/openssl/blob/master/ssl/ssl_lib.c#L1974 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) { if (a->ssl_version != b->ssl_version) return(1); if (a->session_id_length != b->session_id_length) return(1); return(memcmp(a->session_id,b->session_id,a->session_id_length)); }
On Tue, 2014-04-08 at 03:10 +0300, Kirils Solovjovs wrote: > We are doomed. > > Description: http://www.openssl.org/news/vulnerabilities.html > Article dedicated to the bug: http://heartbleed.com/ > Tool to check if TLS heartbeat extension is supported: > http://possible.lv/tools/hb/ > > A missing bounds check in the handling of the TLS heartbeat extension > can be used to reveal up to 64kB of memory to a connected client or server. > > 1.0.1[ abcdef] affected. > > > P.S. Happy Monday! > > _______________________________________________ > Sent through the Full Disclosure mailing list > http://nmap.org/mailman/listinfo/fulldisclosure > Web Archives & RSS: http://seclists.org/fulldisclosure/ _______________________________________________ Sent through the Full Disclosure mailing list http://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
