Asterisk SIP Channel Driver ACK with SDP Denial of Service (AST-2013-004)

medium Nessus Plugin ID 69558

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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 denial of service vulnerability.

The application does not properly handle 'ACK' messages with SDP after a channel has been closed.

Solution

Upgrade to Asterisk 1.8.23.1 / 11.5.1 / Certified Asterisk 1.8.15-cert3 / 11.2-cert2, or apply the appropriate patch listed in the Asterisk advisory.

Plugin Details

Severity: Medium

ID: 69558

File Name: asterisk_ast_2013_004.nasl

Version: 1.9

Type: remote

Family: Misc.

Published: 9/3/2013

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: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/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: 8/27/2013

Vulnerability Publication Date: 8/27/2013

Reference Information

CVE: CVE-2013-5641

BID: 62021

Detections

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