Asterisk HTTP Content-Length Header DoS (AST-2013-002)

Medium Nessus Plugin ID 65897

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 related to HTTP POST requests with very large Content-Length header values.

Solution

Upgrade to Asterisk 1.8.20.2 / 10.12.2 / 11.2.2 / Certified Asterisk 1.8.15-cert2, or apply the patch listed in the Asterisk advisory.

See Also

http://downloads.asterisk.org/pub/security/AST-2013-002.html

https://issues.asterisk.org/jira/browse/ASTERISK-20967

Plugin Details

Severity: Medium

ID: 65897

File Name: asterisk_ast_2013_002.nasl

Version: 1.9

Type: remote

Family: Misc.

Published: 2013/04/10

Updated: 2018/06/27

Dependencies: 63202

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/03/27

Vulnerability Publication Date: 2013/03/27

Reference Information

CVE: CVE-2013-2686

BID: 58756