Asterisk SIP Channel Driver Denial of Service (AST-2011-007)
Low Nessus Plugin ID 54971
SynopsisA telephony application running on the remote host is affected by a denial of service vulnerability.
DescriptionAccording to the version in its SIP banner, the version of Asterisk running on the remote host is 1.8.x prior to 188.8.131.52. It, therefore, could be affected by a denial of service vulnerability.
If a remote attacker initiates a SIP call and the recipient picks up, the remote user can reply with a malformed Contact header that will cause Asterisk to crash.
SolutionUpgrade to Asterisk 184.108.40.206 or later.