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Message-Id: <E1YGc2w-0004Ov-2x@mail.digium.com>
Date: Wed, 28 Jan 2015 17:29:18 -0600
From: "Asterisk Security Team" <security@...erisk.org>
To: fulldisclosure@...lists.org
Subject: [FD] AST-2015-001: File descriptor leak when incompatible codecs
are offered
Asterisk Project Security Advisory - AST-2015-001
Product Asterisk
Summary File descriptor leak when incompatible codecs are
offered
Nature of Advisory Resource exhaustion
Susceptibility Remote Authenticated Sessions
Severity Major
Exploits Known No
Reported On 6 January, 2015
Reported By Y Ateya
Posted On 9 January, 2015
Last Updated On January 28, 2015
Advisory Contact Mark Michelson <mmichelson AT digium DOT com>
CVE Name Pending
Description Asterisk may be configured to only allow specific audio or
video codecs to be used when communicating with a
particular endpoint. When an endpoint sends an SDP offer
that only lists codecs not allowed by Asterisk, the offer
is rejected. However, in this case, RTP ports that are
allocated in the process are not reclaimed.
This issue only affects the PJSIP channel driver in
Asterisk. Users of the chan_sip channel driver are not
affected.
As the resources are allocated after authentication, this
issue only affects communications with authenticated
endpoints.
Resolution The reported leak has been patched.
Affected Versions
Product Release
Series
Asterisk Open Source 1.8.x Unaffected
Asterisk Open Source 11.x Unaffected
Asterisk Open Source 12.x All versions
Asterisk Open Source 13.x All versions
Certified Asterisk 1.8.28 Unaffected
Certified Asterisk 11.6 Unaffected
Corrected In
Product Release
Asterisk Open Source 12.8.1, 13.1.1
Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2015-001-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2015-001-13.diff Asterisk
13
Links https://issues.asterisk.org/jira/browse/ASTERISK-24666
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This document may be superseded by later versions; if so, the latest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-2015-001.pdf and
http://downloads.digium.com/pub/security/AST-2015-001.html
Revision History
Date Editor Revisions Made
9 January, 2015 Mark Michelson Initial creation
Asterisk Project Security Advisory - AST-2015-001
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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