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Asterisk SIP Channel Driver Denial of Service (AST-2011-007)

low Nessus Plugin ID 54971

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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 1.8.x prior to 1.8.4.2. It, therefore, could be affected by a denial of service vulnerability.

If a remote attacker initiates a SIP call and the recipient picks up, the remote user can reply with a malformed Contact header that will cause Asterisk to crash.

Solution

Upgrade to Asterisk 1.8.4.2 or later.

See Also

http://downloads.asterisk.org/pub/security/AST-2011-007.html

https://seclists.org/bugtraq/2011/Jun/27

Plugin Details

Severity: Low

ID: 54971

File Name: asterisk_ast_2011_007.nasl

Version: 1.17

Type: remote

Published: 6/5/2011

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: Low

Base Score: 3.5

Temporal Score: 2.6

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

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: 6/2/2011

Vulnerability Publication Date: 6/2/2011

Reference Information

CVE: CVE-2011-2216

BID: 48096

SECUNIA: 44828