Asterisk Multiple Vulnerabilities (AST-2012-014 / AST-2012-015)

Medium Nessus Plugin ID 64717


A telephony application running on the remote host is affected by multiple vulnerabilities.


According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by the following vulnerabilities :

- A stack-based buffer overflow error exists related to SIP, HTTP and XMPP handling over TCP. Note that in the case of 'Certified Asterisk', SIP is not affected.
Further note that in the case of XMPP, an attacker must establish an authenticated session first. (CVE-2012-5976)

- An error exists related to device state cache and anonymous calls that could allow system resources to be exhausted. Note this vulnerability only affects systems configured to allow anonymous calls. (CVE-2012-5977)


Upgrade to Asterisk / 10.11.1 / 11.1.2, Certified Asterisk 1.8.11-cert10 or apply the patches listed in the Asterisk advisory.

See Also

Plugin Details

Severity: Medium

ID: 64717

File Name: asterisk_ast_2012_015.nasl

Version: 1.11

Type: remote

Family: Misc.

Published: 2013/02/20

Updated: 2019/12/04

Dependencies: 63202

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2012-5976

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/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: 2013/01/02

Vulnerability Publication Date: 2013/01/02

Reference Information

CVE: CVE-2012-5976, CVE-2012-5977

BID: 57105, 57106