The IRC protocol plugin in Gaim 1.2.0, and possibly earlier versions, allows (1) remote attackers to inject arbitrary Gaim markup via irc_msg_kick, irc_msg_mode, irc_msg_part, irc_msg_quit, (2) remote attackers to inject arbitrary Pango markup and pop up empty dialog boxes via irc_msg_invite, or (3) malicious IRC servers to cause a denial of service (application crash) by injecting certain Pango markup into irc_msg_badmode, irc_msg_banned, irc_msg_unknown, irc_msg_nochan functions.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9185
https://exchange.xforce.ibmcloud.com/vulnerabilities/19939
https://exchange.xforce.ibmcloud.com/vulnerabilities/19937
http://www.securityfocus.com/bid/13003
http://www.securityfocus.com/archive/1/426078/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2005-365.html
http://www.novell.com/linux/security/advisories/2005_36_sudo.html
http://www.mandriva.com/security/advisories?name=MDKSA-2005:071
http://sourceforge.net/project/shownotes.php?group_id=235&release_id=317750
http://secunia.com/advisories/14815