The UPnP functionality in Pidgin 2.0.0, and possibly other versions, allows remote attackers to trigger the download of arbitrary files and cause a denial of service (memory or disk consumption) via a UDP packet that specifies an arbitrary URL.
crisp.cs.du.edu/?q=ca2007-1
secunia.com/advisories/32859
secunia.com/advisories/33102
support.avaya.com/elmodocs2/security/ASA-2008-493.htm
www.mandriva.com/security/advisories?name=MDVSA-2009:025
www.openwall.com/lists/oss-security/2008/06/27/3
www.redhat.com/support/errata/RHSA-2008-1023.html
www.securityfocus.com/bid/29985
www.ubuntu.com/usn/USN-675-1
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17599
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9076