RHEL 4 : xorg-x11 (RHSA-2008:0030)

This script is Copyright (C) 2008-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated xorg-x11 packages that fix several security issues are now
available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

[Updated 18th January 2008] The original packages distributed with
this errata had a bug which could cause some X applications to fail on
32-bit platforms. We have updated the packages to correct this bug.

The xorg-x11 packages contain X.Org, an open source implementation of
the X Window System. It provides the basic low-level functionality
that full-fledged graphical user interfaces are designed upon.

Two integer overflow flaws were found in the X.Org server's EVI and
MIT-SHM modules. A malicious authorized client could exploit these
issues to cause a denial of service (crash), or potentially execute
arbitrary code with root privileges on the X.Org server.
(CVE-2007-6429)

A heap based buffer overflow flaw was found in the way the X.Org
server handled malformed font files. A malicious local user could
exploit these issues to potentially execute arbitrary code with the
privileges of the X.Org server. (CVE-2008-0006)

A memory corruption flaw was found in the X.Org server's XInput
extension. A malicious authorized client could exploit this issue to
cause a denial of service (crash), or potentially execute arbitrary
code with root privileges on the X.Org server. (CVE-2007-6427)

An input validation flaw was found in the X.Org server's XFree86-Misc
extension. A malicious authorized client could exploit this issue to
cause a denial of service (crash), or potentially execute arbitrary
code with root privileges on the X.Org server. (CVE-2007-5760)

An information disclosure flaw was found in the X.Org server's TOG-CUP
extension. A malicious authorized client could exploit this issue to
cause a denial of service (crash), or potentially view arbitrary
memory content within the X server's address space. (CVE-2007-6428)

An integer and heap overflow flaw were found in the X.Org font server,
xfs. A user with the ability to connect to the font server could have
been able to cause a denial of service (crash), or potentially execute
arbitrary code with the permissions of the font server.
(CVE-2007-4568, CVE-2007-4990)

A flaw was found in the X.Org server's XC-SECURITY extension, that
could have allowed a local user to verify the existence of an
arbitrary file, even in directories that are not normally accessible
to that user. (CVE-2007-5958)

Users of xorg-x11 should upgrade to these updated packages, which
contain backported patches to resolve these issues.

See also :

https://www.redhat.com/security/data/cve/CVE-2007-4568.html
https://www.redhat.com/security/data/cve/CVE-2007-4990.html
https://www.redhat.com/security/data/cve/CVE-2007-5760.html
https://www.redhat.com/security/data/cve/CVE-2007-5958.html
https://www.redhat.com/security/data/cve/CVE-2007-6427.html
https://www.redhat.com/security/data/cve/CVE-2007-6428.html
https://www.redhat.com/security/data/cve/CVE-2007-6429.html
https://www.redhat.com/security/data/cve/CVE-2008-0006.html
http://rhn.redhat.com/errata/RHSA-2008-0030.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.1
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 30002 ()

Bugtraq ID: 27350
27351
27352
27353
27356

CVE ID: CVE-2007-4568
CVE-2007-4990
CVE-2007-5760
CVE-2007-5958
CVE-2007-6427
CVE-2007-6428
CVE-2007-6429
CVE-2008-0006