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[ GLSA 200703-19 ] LTSP: Authentication bypass in included LibVNCServer code
From: Raphael Marichez <falco () gentoo org>
Date: Sun, 18 Mar 2007 22:49:41 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200703-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: LTSP: Authentication bypass in included LibVNCServer code Date: March 18, 2007 Bugs: #142661 ID: 200703-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== LTSP includes a version of libVNCServer that is vulnerable to an authentication bypass. Background ========== The Linux Terminal Server Project adds thin-client support to Linux servers. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/ltsp < 4.2-r1 >= 4.2-r1 Description =========== The LTSP server includes vulnerable LibVNCServer code, which fails to properly validate protocol types effectively letting users decide what protocol to use, such as "Type 1 - None" (GLSA-200608-05). The LTSP VNC server will accept this security type, even if it is not offered by the server. Impact ====== An attacker could exploit this vulnerability to gain unauthorized access with the privileges of the user running the VNC server. Workaround ========== There is no known workaround at this time. Resolution ========== All LTSP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/ltsp-4.2-r1" References ========== [ 1 ] CVE-2006-2450 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450 [ 2 ] GLSA 200608-05 http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-19.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 200703-19 ] LTSP: Authentication bypass in included LibVNCServer code Raphael Marichez (Mar 19)