manager.c in the Manager Interface in Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 does not properly check for the system privilege, which allows remote authenticated users to execute arbitrary commands via an Originate action that has an Async header in conjunction with an Application header.
downloads.digium.com/pub/security/AST-2011-006.html
lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html
lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html
openwall.com/lists/oss-security/2011/04/22/6
secunia.com/advisories/44197
secunia.com/advisories/44529
securitytracker.com/id?1025433
www.debian.org/security/2011/dsa-2225
www.securityfocus.com/bid/47537
www.vupen.com/english/advisories/2011/1086
www.vupen.com/english/advisories/2011/1107
www.vupen.com/english/advisories/2011/1188