RedHat Security Advisory RHSA-2009:1364

The remote host is missing updates announced in advisory RHSA-2009:1364. The GNOME Display Manager (GDM) is a configurable re-implementation of XDM, the X Display Manager. GDM allows you to log in to your system with the X Window System running, and supports running several different X sessions on your local machine at the same time. A flaw was found in the way the gdm package was built. The gdm package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2009-2697) All users should upgrade to these updated packages, which resolve these issues. GDM must be restarted for this update to take effect. Rebooting achieves this, but changing the runlevel from 5 to 3 and back to 5 also restarts GDM.
Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date