Asterisk Remote Crash Vulnerability in Skinny Channel Driver (AST-2012-009)

medium Nessus Plugin ID 59714

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Synopsis

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

Description

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 the attacker has a valid SCCP (Skinny) ID and closes a connection when in certain call states. A NULL pointer is left behind and can cause the server to crash when the pointer is later dereferenced.

Note the fix for AST-2012-008 was incomplete.

Solution

Upgrade to Asterisk 10.5.1 or apply the patches listed in the Asterisk advisory.

Plugin Details

Severity: Medium

ID: 59714

File Name: asterisk_ast_2012_009.nasl

Version: 1.15

Type: remote

Family: Misc.

Published: 6/26/2012

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2012-3553

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 6/14/2012

Vulnerability Publication Date: 5/30/2012

Reference Information

CVE: CVE-2012-3553

BID: 54017

Detections

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