Asterisk Remote Crash Vulnerability in IAX2 Channel Driver (AST-2012-007)
Low Nessus Plugin ID 59503
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 potentially affected by a vulnerability that could allow a remote attacker to crash the server. This issue could be exploited when a call is put on hold and the entity placing the call on hold contains the configuration item 'mohinterpret' set to the value 'passthrough'. An additional requirement is that the call is placed on hold with no 'music-on-hold' class name selected.
SolutionUpgrade to Asterisk 18.104.22.168 / 10.4.1 / 1.8.11-cert-2 or apply the patches listed in the Asterisk advisory.