RHSA-2010:0788: Moderate: pidgin security update

Pidgin is an instant messaging program which can log in to multipleaccounts on multiple instant messaging networks simultaneously.Multiple NULL pointer dereference flaws were found in the way Pidginhandled Base64 decoding. A remote attacker could use these flaws to crashPidgin if the target Pidgin user was using the Yahoo! Messenger Protocol,MSN, MySpace, or Extensible Messaging and Presence Protocol (XMPP) protocolplug-ins, or using the Microsoft NT LAN Manager (NTLM) protocol forauthentication. (CVE-2010-3711)A NULL pointer dereference flaw was found in the way the Pidgin MSNprotocol plug-in processed custom emoticon messages. A remote attackercould use this flaw to crash Pidgin by sending specially-crafted emoticonmessages during mutual communication. (CVE-2010-1624)Red Hat would like to thank the Pidgin project for reporting these issues.Upstream acknowledges Daniel Atallah as the original reporter ofCVE-2010-3711, and Pierre Nogues of Meta Security as the original reporterof CVE-2010-1624.All Pidgin users should upgrade to these updated packages, which containbackported patches to resolve these issues. Pidgin must be restarted forthis update to take effect.