An updated xscreensaver package that fixes a security flaw is now
available for CentOS Linux 2.1, 3, and 4.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
XScreenSaver is a collection of screensavers.
Alex Yamauchi discovered a flaw in the way XScreenSaver verifies user
passwords. When a system is using a remote directory service for login
credentials, a local attacker may be able to cause a network outage causing
XScreenSaver to crash, unlocking the screen. (CVE-2007-1859)
Users of XScreenSaver should upgrade to this updated package, which
contains a backported patch to correct this issue.