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Sicherheit: Mangelnde Rechteprüfung in gdm
Aktuelle Meldungen Distributionen
Name: Mangelnde Rechteprüfung in gdm
ID: RHSA-2010:0657-02
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux
Datum: Do, 26. August 2010, 23:13
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5079
Applikationen: Gnome Display Manager

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Low: gdm security and bug fix update
Advisory ID: RHSA-2010:0657-02
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0657.html
Issue date: 2010-08-26
CVE Names: CVE-2007-5079
=====================================================================

1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

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.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

181302 - CVE-2007-5079 gdm with xdmcp ignoring tcp_wrappers on x86_64
625818 - gdm/ cannot shutdown system

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.src.rpm

i386:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm

ia64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm

ppc:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.ppc.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.ppc.rpm

s390:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.s390.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.s390.rpm

s390x:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.s390x.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.s390x.rpm

x86_64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.src.rpm

i386:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm

x86_64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.src.rpm

i386:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm

ia64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm

x86_64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.src.rpm

i386:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.i386.rpm

ia64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.ia64.rpm

x86_64:
gdm-2.6.0.5-7.rhel4.19.el4_8.2.x86_64.rpm
gdm-debuginfo-2.6.0.5-7.rhel4.19.el4_8.2.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://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2007-5079.html
http://www.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More
contact
details at https://www.redhat.com/security/team/contact/

Copyright 2010 Red Hat, Inc.
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