The Manager Interface in Asterisk before 1.2.18 and 1.4.x before 1.4.3
allows remote attackers to cause a denial of service (crash) by using MD5
authentication to authenticate a user that does not have a password defined
in manager.conf, resulting in a NULL pointer dereference.
Updated: 2012-06-01 15:17:51 UTC (commit 5347)