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Gentoo alert 201203-05 (rack)

From:  Sean Amoss <ackle@gentoo.org>
To:  gentoo-announce@gentoo.org
Subject:  [gentoo-announce] [ GLSA 201203-05 ] Rack: Denial of Service
Date:  Mon, 05 Mar 2012 20:35:31 -0500
Message-ID:  <4F5569E3.6090609@gentoo.org>
Archive-link:  Article, Thread

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201203-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Rack: Denial of Service Date: March 06, 2012 Bugs: #396455 ID: 201203-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A hash collision vulnerability in Rack allows remote attackers to cause a Denial of Service condition. Background ========== Rack is a modular Ruby web server interface. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-ruby/rack < 1.1.3 >= 1.1.3 Description =========== Rack does not properly randomize hash functions to protect against hash collision attacks. Impact ====== A remote attacker could send a specially crafted form post, possibly resulting in a Denial of Service condition. Workaround ========== There is no known workaround at this time. Resolution ========== All Rack users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-ruby/rack-1.1.3" References ========== [ 1 ] CVE-2011-5036 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-5036 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201203-05.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 https://bugs.gentoo.org. License ======= Copyright 2012 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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