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

medium Nessus Plugin ID 64717

Synopsis

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

Description

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)

Solution

Upgrade to Asterisk 1.8.19.1 / 10.11.1 / 11.1.2, Certified Asterisk 1.8.11-cert10 or apply the patches listed in the Asterisk advisory.

See Also

http://downloads.asterisk.org/pub/security/AST-2012-014.html

http://downloads.asterisk.org/pub/security/AST-2012-015.html

http://blog.exodusintel.com/2013/01/07/who-was-phone/

Plugin Details

Severity: Medium

ID: 64717

File Name: asterisk_ast_2012_015.nasl

Version: 1.12

Type: remote

Family: Misc.

Published: 2/20/2013

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.7

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2012-5976

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: Settings/ParanoidReport, asterisk/sip_detected

Exploit Ease: No known exploits are available

Patch Publication Date: 1/2/2013

Vulnerability Publication Date: 1/2/2013

Reference Information

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

BID: 57105, 57106