Buffer overflow in BlueCoat (a) WinProxy before 6.1a and (b) the web console access functionality in ProxyAV before 2.4.2.3 allows remote attackers to execute arbitrary code via a long Host: header.
http://www.vupen.com/english/advisories/2006/0622
http://www.vupen.com/english/advisories/2006/0065
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=364
http://www.bluecoat.com/support/knowledge/advisory_host_header_stack_overflow.html
http://securitytracker.com/id?1015441