Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

        AST-2019-001: Asterisk Remote crash vulnerability with SDP
                            protocol violation
                               1 March 2019


        AusCERT Security Bulletin Summary

Product:           Asterisk
Publisher:         Asterisk
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-7251  

Original Bulletin: 

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

Asterisk Project Security Advisory - AST-2019-001

       Product         Asterisk
      Summary         Remote crash vulnerability with SDP protocol violation

 Nature of Advisory    Denial Of Service

   Susceptibility      Remote Authenticated Sessions

      Severity         Low

   Exploits Known      No

     Reported On       January 24, 2019

     Reported By       Sotiris Ganouris

      Posted On        November 14,2018

   Last Updated On

  Advisory Contact     gjoseph AT digium DOT com

      CVE Name         CVE-2019-7251

     Description       When Asterisk makes an outgoing call, a very specific SDP protocol violation by
                       the remote party can cause Asterisk to crash.

     Resolution        Upgrade Asterisk to a fixed version.

                               Affected Versions

              Product                  Release
       Asterisk Open Source             15.x      All releases
       Asterisk Open Source             16.x      All releases

                                 Corrected In

                     Product                                             Release
               Asterisk Open Source                                       15.7.2
               Asterisk Open Source                                       16.2.1

                     SVN URL                        Revision
http://downloads.asterisk.org/pub/security/AST-201  Asterisk 15
9 - 0 0 1 -1 5 .diff
http://downloads.asterisk.org/pub/security/AST-201  Asterisk 16
9 - 0 0 1 -1 6 .diff

        Links          https://issues.asterisk.org/jira/browse/ASTERISK-28260

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This document may be superseded by later versions; if so, the latest version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-2019-001 .pdf
and http://downloads.digium.com/pub/security/ AST-2019-001 .html

                               Revision History

       Date          Editor                     Revisions Made
January 31, 2019     George Joseph              Initial revision

               Asterisk Project Security Advisory - AST-2019-001
              Copyright (C) 2018 Digium, Inc. All Rights Reserved.
  Permission is hereby granted to distribute and publish this advisory in its
                           original, unaltered form.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
Comment: http://www.auscert.org.au/render.html?it=1967