Fedora 18 : asterisk-11.2.2-1.fc18 (2013-4566)

High Nessus Plugin ID 65836


The remote Fedora host is missing a security update.


The Asterisk Development Team has announced security releases for Certified Asterisk 1.8.15 and Asterisk 1.8, 10, and 11. The available security releases are released as versions 1.8.15-cert2,, 10.12.2, 10.12.2-digiumphones, and 11.2.2.

These releases are available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk/releases

The release of these versions resolve the following issues :

- A possible buffer overflow during H.264 format negotiation. The format attribute resource for H.264 video performs an unsafe read against a media attribute when parsing the SDP.

This vulnerability only affected Asterisk 11.

- A denial of service exists in Asterisk's HTTP server.
AST-2012-014, fixed in January of this year, contained a fix for Asterisk's HTTP server for a remotely-triggered crash. While the fix prevented the crash from being triggered, a denial of service vector still exists with that solution if an attacker sends one or more HTTP POST requests with very large Content-Length values.

This vulnerability affects Certified Asterisk 1.8.15, Asterisk 1.8, 10, and 11

- A potential username disclosure exists in the SIP channel driver. When authenticating a SIP request with alwaysauthreject enabled, allowguest disabled, and autocreatepeer disabled, Asterisk discloses whether a user exists for INVITE, SUBSCRIBE, and REGISTER transactions in multiple ways.

This vulnerability affects Certified Asterisk 1.8.15, Asterisk 1.8, 10, and 11

These issues and their resolutions are described in the security advisories.

For more information about the details of these vulnerabilities, please read security advisories AST-2013-001, AST-2013-002, and AST-2013-003, which were released at the same time as this announcement.

For a full list of changes in the current releases, please see the ChangeLogs :

http://downloads.asterisk.org/pub/telephony/certified-asterisk/release s/ChangeLog-1.8.15-cert2 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g- http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-10.12.2 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-10.12.2-digiumphones http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-11.2.2

The security advisories are available at :

- http://downloads.asterisk.org/pub/security/AST-2013-001.

- http://downloads.asterisk.org/pub/security/AST-2013-00 2.pdf

- http://downloads.asterisk.org/pub/security/AST-2013-00 3.pdf

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected asterisk package.

See Also












Plugin Details

Severity: High

ID: 65836

File Name: fedora_2013-4566.nasl

Version: $Revision: 1.11 $

Type: local

Agent: unix

Published: 2013/04/08

Modified: 2016/05/09

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:asterisk, cpe:/o:fedoraproject:fedora:18

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/03/29

Reference Information

CVE: CVE-2013-2685

BID: 58760

FEDORA: 2013-4566