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AUSCERT External Security Bulletin Redistribution
ESB-2008.0337 -- [UNIX/Linux][RedHat]
Moderate: gnome-screensaver security update
3 April 2008
AusCERT Security Bulletin Summary
Publisher: Red Hat
Operating System: Red Hat Linux 5
UNIX variants (UNIX, Linux, OSX)
Impact: Inappropriate Access
CVE Names: CVE-2008-0887
Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0197.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running gnome-screensaver check for an updated version of the
software for their operating system.
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Red Hat Security Advisory
Synopsis: Moderate: gnome-screensaver security update
Advisory ID: RHSA-2008:0197-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0197.html
Issue date: 2008-04-02
CVE Names: CVE-2008-0887
An updated gnome-screensaver package that fixes a security flaw is now
available for Red Hat Enterprise Linux 5.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
gnome-screensaver is the GNOME project's official screen saver program.
A flaw was found in the way gnome-screensaver verified user passwords. When
a system used a remote directory service for login credentials, a local
attacker able to cause a network outage could cause gnome-screensaver to
crash, unlocking the screen. (CVE-2008-0887)
Users of gnome-screensaver should upgrade to this updated package, which
contains a backported patch to correct this issue.
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
5. Bugs fixed (http://bugzilla.redhat.com/):
435773 - CVE-2008-0887 gnome-screensaver using NIS auth will unlock if NIS goes away
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Red Hat Enterprise Linux (v. 5 server):
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <firstname.lastname@example.org>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2008 Red Hat, Inc.
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