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             AUSCERT External Security Bulletin Redistribution

      Asterisk: Remote crash vulnerability DNS SRV and NAPTR lookups
                             15 November 2018


        AusCERT Security Bulletin Summary

Product:           Asterisk
Publisher:         Asterisk
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-19278  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Asterisk Project Security Advisory - AST-2018-010

Product       Asterisk
Summary       Remote crash vulnerability DNS SRV and NAPTR lookups
Nature of Advisory Denial Of Service
Susceptibility   Remote Unauthenticated Sessions
Severity      Moderate
Exploits Known   No
Reported On     October 23, 2018
Reported By     Jan Hoffmann
Posted On      November 14,2018
Last Updated On   November 14, 2018
Advisory Contact  gjoseph AT digium DOT com

CVE Name      CVE-2018-19278

Description   There is a buffer overflow vulnerability in dns_srv and dns_naptr
	      functions of Asterisk that allows an attacker to crash Asterisk via a
	      specially crafted DNS SRV or NAPTR response. The attacker's request
	      causes Asterisk to segfault and crash.

Resolution     Upgrade Asterisk to a fixed version.

Affected Versions

Product               Release  Series

Asterisk Open Source  15.x     All releases

Asterisk Open Source  16.x     All releases

Corrected In

Product                  Release

Asterisk Open Source     15.6.2

Asterisk Open Source     16.0.1


Asterisk 15

Asterisk 16

Links        https://issues.asterisk.org/jira/browse/ASTERISK-28127

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

This document may be superseded by later versions; if so, the latest version
will be posted at http://downloads.digium.com/pub/security/AST-2018-010.pdf and

Revision History

Date                Editor                Revisions Made

October 25, 2018  George Joseph           Initial revision

November 14, 2018 George Joseph           Updated with CVE

       Asterisk Project Security Advisory - AST-2018-010
      Copyright 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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