Red Hat Enterprise Linux 4 does not properly compile and link gdm with tcp_wrappers on x86_64 platforms, which might allow remote attackers to bypass intended access restrictions.

From Red Hat Security Advisory 2010:0657 :

An updated gdm package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

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 on 64-bit platforms, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2007-5079)

This update also fixes the following bug :

* sometimes the system would hang instead of properly shutting down when a user chose 'Shut down' from the login screen. (BZ#625818)

All users should upgrade to this updated package, which contains backported patches to correct 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.

A flaw was found in the way the gdm package was built. The gdm package was missing TCP wrappers support on 64-bit platforms, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2007-5079)

This update also fixes the following bug :

  - sometimes the system would hang instead of properly     shutting down when a user chose 'Shut down' from the     login screen. (BZ#625818)

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.

An updated gdm package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

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 on 64-bit platforms, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2007-5079)

This update also fixes the following bug :

* sometimes the system would hang instead of properly shutting down when a user chose 'Shut down' from the login screen. (BZ#625818)

All users should upgrade to this updated package, which contains backported patches to correct 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.

The remote Redhat Enterprise Linux 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2010:0657 advisory.

  - gdm with xdmcp ignoring tcp_wrappers on x86_64 (CVE-2007-5079)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
68090	Oracle Linux 4 : gdm (ELSA-2010-0657)	Nessus	Oracle Linux Local Security Checks	medium
60846	Scientific Linux Security Update : gdm on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
48912	CentOS 4 : gdm (CESA-2010:0657)	Nessus	CentOS Local Security Checks	medium
48899	RHEL 4 : gdm (RHSA-2010:0657)	Nessus	Red Hat Local Security Checks	critical

Detections

Analytics

CVE-2007-5079

critical

Tenable Plugins

medium

medium

medium

critical