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Asterisk Multiple Vulnerabilities (AST-2011-005 / AST-2011-006)

medium Nessus Plugin ID 53544

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Synopsis

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

Description

According to the version in its SIP banner, the version of Asterisk running on the remote host may be affected by multiple denial of service vulnerabilities :

 - On systems that have the Asterisk Manager interface, Skinny, SIP over TCP, or the built-in HTTP server enabled, it is possible for an attacker to open an unlimited number of connections to Asterisk, which would cause Asterisk to run out of available file descriptors and stop processing any new calls. (AST-2011-005)

 - It is possible to bypass a security check and execute shell commands when they should not have that ability.
 Note that only users with the 'system' privilege should be able to do this. (AST-2011-006)

Solution

Upgrade to Asterisk 1.4.40.1 / 1.6.1.25 / 1.6.2.17.3 / 1.8.3.3 / Business Edition C.3.6.4 or later.

See Also

http://downloads.asterisk.org/pub/security/AST-2011-005.html

http://downloads.asterisk.org/pub/security/AST-2011-006.html

Plugin Details

Severity: Medium

ID: 53544

File Name: asterisk_ast_2011_006.nasl

Version: 1.18

Type: remote

Published: 4/25/2011

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/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: 4/21/2011

Vulnerability Publication Date: 4/21/2011

Reference Information

CVE: CVE-2011-1507, CVE-2011-1599

BID: 47537

SECUNIA: 44197