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[ GLSA 200702-03 ] Snort: Denial of Service
From: Raphael Marichez <falco () gentoo org>
Date: Tue, 13 Feb 2007 23:53:40 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200702-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Snort: Denial of Service Date: February 13, 2007 Bugs: #161632 ID: 200702-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Snort contains a vulnerability in the rule matching algorithm that could result in a Denial of Service. Background ========== Snort is a widely deployed intrusion detection program. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-analyzer/snort < 2.6.1.2 >= 2.6.1.2 Description =========== Randy Smith, Christian Estan and Somesh Jha discovered that the rule matching algorithm of Snort can be exploited in a way known as a "backtracking attack" to perform numerous time-consuming operations. Impact ====== A remote attacker could send specially crafted network packets, which would result in the cessation of the detections and the consumption of the CPU resources. Workaround ========== There is no known workaround at this time. Resolution ========== All Snort users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/snort-2.6.1.2" References ========== [ 1 ] CVE-2006-6931 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6931 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200702-03.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 2007 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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- [ GLSA 200702-03 ] Snort: Denial of Service Raphael Marichez (Feb 13)