gnome-screensaver is vulnerable to denial of service (DoS). The vulnerability exists as 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.
lists.opensuse.org/opensuse-security-announce/2008-07/msg00001.html
osvdb.org/35531
rhn.redhat.com/errata/RHSA-2008-0197.html
secunia.com/advisories/29595
secunia.com/advisories/29606
secunia.com/advisories/29742
secunia.com/advisories/29759
secunia.com/advisories/30967
secunia.com/advisories/32691
security.gentoo.org/glsa/glsa-200804-12.xml
securitytracker.com/id?1019749
www.mandriva.com/security/advisories?name=MDVSA-2008:132
www.redhat.com/security/updates/classification/#moderate
www.redhat.com/support/errata/RHSA-2008-0218.html
www.securityfocus.com/bid/28575
www.ubuntu.com/usn/USN-669-1
access.redhat.com/errata/RHSA-2008:0218
bugzilla.redhat.com/show_bug.cgi?id=435773
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10813
www.redhat.com/archives/fedora-package-announce/2008-April/msg00163.html
www.redhat.com/archives/fedora-package-announce/2008-April/msg00206.html