Asterisk Remote Crash Vulnerability in IAX2 Channel Driver (AST-2012-007)

Low Nessus Plugin ID 59503


A telephony application running on the remote host is affected by a denial of service vulnerability.


According 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.


Upgrade to Asterisk / 10.4.1 / 1.8.11-cert-2 or apply the patches listed in the Asterisk advisory.

See Also

Plugin Details

Severity: Low

ID: 59503

File Name: asterisk_ast_2012_007.nasl

Version: $Revision: 1.11 $

Type: remote

Family: Misc.

Published: 2012/06/14

Modified: 2016/11/11

Dependencies: 63202

Risk Information

Risk Factor: Low


Base Score: 2.6

Temporal Score: 1.9

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/05/29

Vulnerability Publication Date: 2012/05/29

Reference Information

CVE: CVE-2012-2947

BID: 53722

OSVDB: 82450