Buffer overflow in WGagent in WatchGuard WSM and Fireware before 11.8 allows remote attackers to execute arbitrary code via a long sessionid value in a cookie.
osvdb.org/98752
watchguardsecuritycenter.com/2013/10/17/watchguard-dimension-and-fireware-xtm-11-8/
watchguardsecuritycenter.com/2013/10/17/xtm-11-8-secfixes/
www.exploit-db.com/exploits/29273
www.kb.cert.org/vuls/id/233990
www.securityfocus.com/bid/63227
funoverip.net/2013/10/watchguard-cve-2013-6021-stack-based-buffer-overflow-exploit/