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[ GLSA 200608-05 ] LibVNCServer: Authentication bypass
From: Sune Kloppenborg Jeppesen <jaervosz () gentoo org>
Date: Fri, 4 Aug 2006 06:49:17 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200608-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: LibVNCServer: Authentication bypass Date: August 04, 2006 Bugs: #136916 ID: 200608-05 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== VNC servers created with LibVNCServer accept insecure protocol types, even when the server does not offer it, resulting in unauthorized access to the server. Background ========== LibVNCServer is a GPL'ed library for creating VNC servers. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/libvncserver < 0.8.2 >= 0.8.2 Description =========== LibVNCServer fails to properly validate protocol types effectively letting users decide what protocol to use, such as "Type 1 - None". LibVNCServer will accept this security type, even if it is not offered by the server. Impact ====== An attacker could use 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 LibVNCServer users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/libvncserver-0.8.2" References ========== [ 1 ] CVE-2006-2450 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200608-05.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 http://bugs.gentoo.org. License ======= Copyright 2006 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 200608-05 ] LibVNCServer: Authentication bypass Sune Kloppenborg Jeppesen (Aug 04)