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Date: Fri, 19 May 2017 16:54:52 -0500
From: "Asterisk Security Team" <security@...erisk.org>
To: fulldisclosure@...lists.org
Subject: [FD] AST-2017-003: Crash in PJSIP multi-part body parser
Asterisk Project Security Advisory - AST-2017-003
Product Asterisk
Summary Crash in PJSIP multi-part body parser
Nature of Advisory Remote Crash
Susceptibility Remote Unauthenticated Sessions
Severity Critical
Exploits Known No
Reported On 13 April, 2017
Reported By Sandro Gauci
Posted On
Last Updated On April 13, 2017
Advisory Contact Mark Michelson <mark DOT michelson AT digium DOT
com>
CVE Name
Description The multi-part body parser in PJSIP contains a logical
error that can make certain multi-part body parts attempt
to read memory from outside the allowed boundaries. A
specially-crafted packet can trigger these invalid reads
and potentially induce a crash.
The issue is within the PJSIP project and not in Asterisk.
Therefore, the problem can be fixed without upgrading
Asterisk. However, we will be releasing a new version of
Asterisk where the bundled version of PJSIP has been
updated to have the bug patched.
If you are using Asterisk with chan_sip, this issue does
not affect you.
Resolution We have submitted the error report to the PJProject
maintainers and have coordinated a release...........
Affected Versions
Product Release
Series
Asterisk Open Source 11.x Unaffected
Asterisk Open Source 13.x All versions
Asterisk Open Source 14.x All versions
Certified Asterisk 13.13 All versions
Corrected In
Product Release
Asterisk Open Source 13.15.1, 14.4.1
Certified Asterisk 13.13-cert4
Patches
SVN URL Revision
Links https://issues.asterisk.org/jira/browse/ASTERISK-26939
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This document may be superseded by later versions; if so, the latest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-2017-003.pdf and
http://downloads.digium.com/pub/security/AST-2017-003.html
Revision History
Date Editor Revisions Made
13 April, 2017 Mark Michelson Initial advisory created
Asterisk Project Security Advisory - AST-2017-003
Copyright (c) 2017 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
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