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[Full-disclosure] [ GLSA 200901-11 ] Avahi: Denial of Service
From: Pierre-Yves Rofes <py_at_nospam>Date: Wed Jan 14 2009 - 23:05:35 GMT
To: gentoo-announce@gentoo.org
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Synopsis
A Denial of Service vulnerability has been discovered in Avahi.
Background
Avahi is a system that facilitates service discovery on a local network.
Affected packages
Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/avahi < 0.6.24 >= 0.6.24
Description
Hugo Dias reported a failed assertion in the originates_from_local_legacy_unicast_socket() function in avahi-core/server.c when processing mDNS packets with a source port of 0.
Impact
A remote attacker could send specially crafted packets to the daemon, leading to its crash.
Workaround
There is no known workaround at this time.
Resolution
All Avahi users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/avahi-0.6.24"
References
[ 1 ] CVE-2008-5081
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5081
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200901-11.xml
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License
Copyright 2009 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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