Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary code.
https://www.debian.org/security/2004/dsa-493
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11312
http://www.redhat.com/support/errata/RHSA-2004-585.html
http://www.redhat.com/support/errata/RHSA-2004-177.html
http://www.fedoralegacy.org/updates/FC2/2005-11-14-FLSA_2005_123013
http://security.gentoo.org/glsa/glsa-200404-15.xml
http://mail.nl.linux.org/xchat-announce/2004-04/msg00000.html