[asterisk-dev] AST-2018-010: Remote crash vulnerability DNS SRV and NAPTR lookups

[Asterisk Security Team]

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
Last Updated On November 14, 2018
Advisory Contact gjoseph AT digium DOT com
CVE Name

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
SVN URL Revision
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This document may be superseded by later versions; if so, the latest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

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.