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Message-Id: <E1aR9Cm-0000Nt-6H@mail.digium.com>
Date: Wed, 03 Feb 2016 19:59:32 -0600
From: "Asterisk Security Team" <security@...erisk.org>
To: bugtraq@...urityfocus.com
Subject: AST-2016-003: Remote crash vulnerability when receiving UDPTL FAX data.
Asterisk Project Security Advisory - AST-2016-003
Product Asterisk
Summary Remote crash vulnerability when receiving UDPTL FAX
data.
Nature of Advisory Denial of Service
Susceptibility Remote Authenticated Sessions
Severity Minor
Exploits Known Yes
Reported On December 2, 2015
Reported By Walter Dokes, Torrey Searle
Posted On February 3, 2016
Last Updated On February 3, 2016
Advisory Contact Richard Mudgett <rmudgett AT digium DOT com>
CVE Name Pending
Description If no UDPTL packets are lost there is no problem. However,
a lost packet causes Asterisk to use the available error
correcting redundancy packets. If those redundancy packets
have zero length then Asterisk uses an uninitialized buffer
pointer and length value which can cause invalid memory
accesses later when the packet is copied.
Resolution Upgrade to a released version with the fix incorporated or
apply patch.
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
Asterisk Open Source 13.x All versions
Certified Asterisk 1.8.28 All versions
Certified Asterisk 11.6 All versions
Certified Asterisk 13.1 All versions
Corrected In
Product Release
Asterisk Open Source 11.21.1, 13.7.1
Certified Asterisk 11.6-cert12, 13.1-cert3
Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2016-003-1.8.28.diff Certified
Asterisk
1.8.28
http://downloads.asterisk.org/pub/security/AST-2016-003-11.6.diff Certified
Asterisk
11.6
http://downloads.asterisk.org/pub/security/AST-2016-003-13.1.diff Certified
Asterisk
13.1
http://downloads.asterisk.org/pub/security/AST-2016-003-1.8.diff Asterisk
1.8
http://downloads.asterisk.org/pub/security/AST-2016-003-11.diff Asterisk
11
http://downloads.asterisk.org/pub/security/AST-2016-003-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2016-003-13.diff Asterisk
13
Links https://issues.asterisk.org/jira/browse/ASTERISK-25603
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This document may be superseded by later versions; if so, the latest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-2016-003.pdf and
http://downloads.digium.com/pub/security/AST-2016-003.html
Revision History
Date Editor Revisions Made
December 7, 2015 Richard Mudgett Initial document created
Asterisk Project Security Advisory - AST-2016-003
Copyright (c) 2015 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
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