Pidgin 2.4.1 allows remote attackers to cause a denial of service (crash) via a long filename that contains certain characters, as demonstrated using an MSN message that triggers the crash in the msn_slplink_process_msg function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18050
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10131
http://www.vupen.com/english/advisories/2008/1947
http://www.ubuntu.com/usn/USN-675-1
http://www.securityfocus.com/bid/29985
http://www.securityfocus.com/archive/1/493682/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2008-1023.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:025
http://support.avaya.com/elmodocs2/security/ASA-2008-493.htm
http://securityreason.com/securityalert/3966
http://secunia.com/advisories/33102