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 attackeras 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Asterisk Project Security Advisories are posted at http://www.asterisk.org/security This document may be superseded by later versions; if so, the latest version will be posted at http://downloads.digium.com/pub/security/AST-2018-010.pdf and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 A(c) 2018 Digium, Inc. All Rights Reserved. Permission is hereby granted to distribute and publish this advisory in its original, unaltered form.