Fedora Account System
Red Hat Associate
Red Hat Customer
XChat did not verify that the server hostname matched the domain name in the subject's Common Name (CN) or subjectAltName field in X.509 certificates. This could allow a man-in-the-middle attacker to spoof an SSL server if they had a certificate that was valid for any domain name.
Acknowledgements: Red Hat would like to thank Nicholas Bebout for reporting this issue.
This was fixed in hexchat this past November: https://github.com/hexchat/hexchat/commit/c9b63f7f9be01692b03fa15275135a4910a7e02d It was originally reported in April 2013: https://github.com/hexchat/hexchat/issues/524 I'm not sure if that means it should have a 2013 CVE or a 2014 one. I am requesting one on oss-security. Also, upstream XChat is no longer in active development.
Created xchat tracking bugs for this issue: Affects: fedora-all [bug 1187322]
CVE assignment: http://seclists.org/oss-sec/2016/q2/17