[ GLSA 200703-19 ] LTSP: Authentication bypass in included LibVN
--cYtjc4pxslFTELvY
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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
--cYtjc4pxslFTELvY
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
iQEVAwUBRf2z9TvRww8BFPxFAQJ1sAgAj8sBEOGCqrVp/buDLgvQhAbEdaFhyQf7
lkzkiG5CtlE4snfWjopLqR+HojV4koztqafPQ7cO7O2X2hC8DtlDpgVfeu23ze7P
XpPd9NUQ3/hMSxF7jnf+IV54CRQ9yLMT7XLZBamCQqXScW8XCztXAVD95yp64Wl2
fZF3o8qlzDYSq038WpQWGmvb51eqwhZFYaYO7zA+pdoJ8mWQR39jgVSFnic8/Fmn
IKUXb5WAJLG3pqTz0SIUkweHDo+Vjlx/mtDeWqQ/aMIkhG9sCKVp/c2k668CoWfA
CFoW/hoaDqnJ5Gwt3nXOU6i/FvQjxbhXC+iAEGpxXOiLtvjYbuBvgA==
=YR5H
-----END PGP SIGNATURE-----
--cYtjc4pxslFTELvY--