ESB-2018.3565 - [Win][UNIX/Linux] Asterisk: Denial of service - Remote/unauthenticated 2018-11-15

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3565
      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: 
   http://downloads.asterisk.org/pub/security/AST-2018-010.html

- --------------------------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


Patches


http://downloads.asterisk.org/pub/security/AST-2018-010-15.diff
Asterisk 15

http://downloads.asterisk.org/pub/security/AST-2018-010-16.diff
Asterisk 16


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


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This document may be superseded by later versions; if so, the latest version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


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.

- --------------------------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:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=gVMw
-----END PGP SIGNATURE-----

« Back to bulletins