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.