AST-2014-001: Stack Overflow In HTTP Processing Of Cookie Headers.

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Asterisk Project Security Advisory – AST-2014-001

Product Asterisk
Summary Stack Overflow in HTTP Processing of Cookie Headers.
Nature of Advisory Denial Of Service
Susceptibility Remote Unauthenticated Sessions
Severity Moderate
Exploits Known No
Reported On February 21, 2014
Reported By Lucas Molas, researcher at Programa STIC, Fundacion

Dr. Manuel Sadosky, Buenos Aires, Argentina
Posted On March 10, 2014
Last Updated On March 10, 2014
Advisory Contact Richard Mudgett
CVE Name CVE-2014-2286

Description Sending a HTTP request that is handled by Asterisk with a
large number of Cookie headers could overflow the stack.
You could even exhaust memory if you sent an unlimited
number of headers in the request.

Resolution The patched versions now handle headers in a fashion that
prevents a stack overflow. Users should upgrade to a
corrected version, apply the released patches, or disable
HTTP support.

Affected Versions
Product Release Series
Asterisk Open Source 1.8.x All versions
Asterisk Open Source 11.x All versions
Asterisk Open Source 12.x All versions
Certified Asterisk 1.8.x All versions
Certified Asterisk 11.x All versions

Corrected In
Product Release
Asterisk Open Source 1.8.26.1, 11.8.1, 12.1.1
Certified Asterisk 1.8.15-cert5, 11.6-cert2

Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2014-001-1.8.diff Asterisk
1.8
http://downloads.asterisk.org/pub/security/AST-2014-001-11.diff Asterisk
11
http://downloads.asterisk.org/pub/security/AST-2014-001-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2014-001-1.8.15.diff Certified
Asterisk
1.8.15
http://downloads.asterisk.org/pub/security/AST-2014-001-11.6.diff Certified
Asterisk
11.6

Links https://issues.asterisk.org/jira/browse/ASTERISK-23340

Asterisk Project Security Advisories are posted at
http://www.asterisk.org/security

This document may be superseded by later versions; if so, the latest
version will be posted at
http://downloads.digium.com/pub/security/AST-2014-001.pdf and
http://downloads.digium.com/pub/security/AST-2014-001.html

Revision History
Date Editor Revisions Made
03/10/14 Richard Mudgett Initial Revision.

Asterisk Project Security Advisory – AST-2014-001
Copyright (c) 2014 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.