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Asterisk Project Security Advisory - AST-2018-005

Asterisk Project Security Advisory - AST-2018-005
Posted Feb 23, 2018
Authored by Sandro Gauci | Site asterisk.org

Asterisk Project Security Advisory - A crash occurs when a number of authenticated INVITE messages are sent over TCP or TLS and then the connection is suddenly closed. This issue leads to a segmentation fault.

tags | advisory, tcp
advisories | CVE-2018-7286
MD5 | 0733c7c77cd97a87cdc416aef921fea4

Asterisk Project Security Advisory - AST-2018-005

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               Asterisk Project Security Advisory - AST-2018-005

Product Asterisk
Summary Crash when large numbers of TCP connections are
closed suddenly
Nature of Advisory Remote Crash
Susceptibility Remote Authenticated Sessions
Severity Moderate
Exploits Known No
Reported On January 24, 2018
Reported By Sandro Gauci
Posted On February 21, 2018
Last Updated On February 21, 2018
Advisory Contact gjoseph AT digium DOT com
CVE Name CVE-2018-7286

Description A crash occurs when a number of authenticated INVITE
messages are sent over TCP or TLS and then the connection
is suddenly closed. This issue leads to a segmentation
fault.

Resolution A patch to asterisk is available that prevents the crash by
locking the underlying transport until a response is sent.

Affected Versions
Product Release Series
Asterisk Open Source 13.x All Versions
Asterisk Open Source 14.x All Versions
Asterisk Open Source 15.x All Versions
Certified Asterisk 13.18 All Versions

Corrected In
Product Release
Asterisk Open Source 13.19.2, 14.7.6, 15.2.2
Certified Asterisk 13.18-cert3

Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2018-005-13.diff Asterisk
13
http://downloads.asterisk.org/pub/security/AST-2018-005-14.diff Asterisk
14
http://downloads.asterisk.org/pub/security/AST-2018-005-15.diff Asterisk
15
http://downloads.asterisk.org/pub/security/AST-2018-005-13.18.diff Certified
Asterisk
13.18

Links https://issues.asterisk.org/jira/browse/ASTERISK-27618

http://downloads.asterisk.org/pub/security/AST-2018-005.html

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This document may be superseded by later versions; if so, the latest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-2018-005.pdf and
http://downloads.digium.com/pub/security/AST-2018-005.html

Revision History
Date Editor Revisions Made
February 6, 2018 George Joseph Initial Revision

Asterisk Project Security Advisory - AST-2018-005
Copyright A(c) 2018 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.

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