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Red Hat Enterprise: RHSA-2008:0218-01 Moderate: gnome-screensaver Flaw

red hat
Calendar Grey April 3, 2008
Dist Redhat Esm H88
Addressing a security vulnerability in gnome-screensaver, this advisory warns of an exploit allowing screen unlocking during network disruptions. Categorized as moderate severity.
An updated gnome-screensaver package that fixes a security flaw is now available for Red Hat Enterprise Linux FasTrack 5. When a system used a remote directory service for login...

Solution

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate security flaw Red Hat Enterprise gnome-screensaver

References

https://www.cve.org/CVERecord?id=CVE-2008-0887 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: gnome-screensaver-2.16.1-8.el5.i386.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.i386.rpm
x86_64: gnome-screensaver-2.16.1-8.el5.x86_64.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: gnome-screensaver-2.16.1-8.el5.i386.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.i386.rpm
ia64: gnome-screensaver-2.16.1-8.el5.ia64.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.ia64.rpm
ppc: gnome-screensaver-2.16.1-8.el5.ppc.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.ppc.rpm
s390x: gnome-screensaver-2.16.1-8.el5.s390x.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.s390x.rpm
x86_64: gnome-screensaver-2.16.1-8.el5.x86_64.rpm gnome-screensaver-debuginfo-2.16.1-8.el5.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package


Advisory ID: RHSA-2008:0218-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0218.html
Issue date: 2008-04-03

Topic

An updated gnome-screensaver package that fixes a security flaw is now available for Red Hat Enterprise Linux FasTrack 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Topics%20covered

Topics Covered

security advisory moderate security flaw Red Hat Enterprise gnome-screensaver

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

Bugs Fixed

435773 - CVE-2008-0887 gnome-screensaver using NIS auth will unlock if NIS goes away

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