Multiple vulnerabilities have been discovered in pidgin, a multi-protocol instant messaging client. In addition to fixing the vulnerabilities, this revision specific to the oldstable distribution , reduces the supported protocols to: IRC, Jabber/XMPP, Sametime, and SIMPLE. Users of other protocols are encouraged to either upgrade to the stable distribution or to use the version in backports. It must be noted, however, that the latter is not supported by the Security Team. For reference, the original description of the vulnerabilities from DSA-2859-1 is quoted below: CVE-2013-6485 Matt Jones discovered a buffer overflow in the parsing of malformed HTTP responses. CVE-2013-6490 Yves Younan discovered a buffer overflow when parsing SIMPLE headers.