[ GLSA 200804-12 ] gnome-screensaver: Privilege escalation
Date: Fri, 11 Apr 2008 18:10:27 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: [email protected]
Subject: [ GLSA 200804-12 ] gnome-screensaver: Privilege escalation
Message-ID: <20080411161027.GG27522@falco.falcal.net.>
Mail-Followup-To: [email protected],
[email protected], [email protected],
[email protected]
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature"; boundary="yQbNiKLmgenwUfTN"
Content-Disposition: inline
X-Web: http://falco.bz/
X-GPG-fingerprint: 04EB 153A 6B28 3E80 87A9 9B4F A77C 4BDE 021C 5BD2
X-GPG-Key: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x021C5BD2
Organization: Gentoo Linux Security Team
User-Agent: Mutt/1.5.16 (2007-06-09)
X-Virus-Scanned: antivirus-gw at tyumen.ru
--yQbNiKLmgenwUfTN
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200804-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: gnome-screensaver: Privilege escalation
Date: April 11, 2008
Bugs: #213940
ID: 200804-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
gnome-screensaver allows local users to bypass authentication under
certain configurations.
Background
==========
gnome-screensaver is a screensaver, designed to integrate with the
Gnome desktop, that can replace xscreensaver.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 gnome-extra/gnome-screensaver < 2.20.0-r3 >= 2.20.0-r3
Description
===========
gnome-screensaver incorrectly handles the results of the getpwuid()
function in the file src/setuid.c when using directory servers (like
NIS) during a network outage, a similar issue to GLSA 200705-14.
Impact
======
A local user can crash gnome-xscreensaver by preventing network
connectivity if the system uses a remote directory service for
credentials such as NIS or LDAP, which will unlock the screen.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All gnome-screensaver users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=gnome-extra/gnome-screensaver-2.20.0-r3"
References
==========
[ 1 ] CVE-2008-0887
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0887
[ 2 ] GLSA 200705-14
http://www.gentoo.org/security/en/glsa/glsa-200705-14.xml
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200804-12.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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 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
--yQbNiKLmgenwUfTN
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.7 (GNU/Linux)
iQEVAwUBR/+NczvRww8BFPxFAQJEPwf/Zgnh1XkzfBJ0/UxsBx6wlXs3Xhzvh6dH
hMzNme9OKVwp2ZYxqZypZCET6zOsYt02CJtpwyAIPr4DQBMWKMhAGyAgWmfQLPhe
HjF4b2kTUS5xrJDIF9xtauXE0T3OaQ7UTSK/B0U7gSKx+yPqukJemWw2VZIP3pmS
vgNQhJsHllyjwshsDgo/viqupan5RbwP19cGZ3vKP/5RUE6bL3eFV/WUf/1LEPdJ
NP/CC9uMXu/saJuJ/lz9h1SDaLbTrd+Cd8riMm/TdwvB3NApbwslj14UnWEZWaWY
mFjO3YL36zbrmBSRi61UwkED92jhBsrYpKfY4Vff8CcaZaHBPOf4RQ==
=m8re
-----END PGP SIGNATURE-----
--yQbNiKLmgenwUfTN--
