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Date: Fri, 13 Feb 2004 03:54 -0500
Subject: [RHSA-2004:059-01] Updated XFree86 packages fix privilege escalation vulnerability

Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated XFree86 packages fix privilege escalation vulnerability
Advisory ID:       RHSA-2004:059-01
Issue date:        2004-02-13
Updated on:        2004-02-13
Product:           Red Hat Linux
Cross references:  
Obsoletes:         RHSA-2003:288
CVE Names:         CAN-2004-0083 CAN-2004-0084 CAN-2004-0106
- ---------------------------------------------------------------------

1. Topic:

Updated XFree86 packages that fix a privilege escalation vulnerability are
now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

XFree86 is an implementation of the X Window System, providing the core
graphical user interface and video drivers. 

iDefense discovered two buffer overflows in the parsing of the 'font.alias'
file.  A local attacker could exploit this vulnerability by creating a
carefully-crafted file and gaining root privileges.
The Common Vulnerabilities and Exposures project ( has
assigned the names CAN-2004-0083 and CAN-2004-0084 to these issues.

Additionally David Dawes discovered additional flaws in reading font files.
 The Common Vulnerabilities and Exposures project ( has
assigned the name CAN-2004-0106 to these issues.

All users of XFree86 are advised to upgrade to these erratum packages,
which contain a backported fix and are not vulnerable to these issues.

Red Hat would like to thank David Dawes from XFree86 for the patches and
notification of these issues.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:


This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL Certificate 
Errors, you need to install a version of the up2date client with an updated 
certificate.  The latest version of up2date is available from the Red Hat 
FTP site and may also be downloaded directly from the RHN website:

5. Bug IDs fixed ( for more info):

76959 - applications recieve too many keyboard events from X
114901 - CAN-2004-0083 XFree86 font.alias overflow

6. RPMs required:

Red Hat Linux 9:



7. Verification:

MD5 sum                          Package Name
- --------------------------------------------------------------------------

d02a7a7d68a89eb6330824a46c944c81 9/en/os/SRPMS/XFree86-4.3.0-2.90.55.src.rpm
d2229ab25ab6bcb7fa46b31b0494fb99 9/en/os/i386/XFree86-100dpi-fonts-4.3.0-2.90.55.i386.rpm
481ce1f3cd1ed944c95c8bbf1b3e0905 9/en/os/i386/XFree86-4.3.0-2.90.55.i386.rpm
c8a788ef8c475112bdceeccfe6a3546e 9/en/os/i386/XFree86-75dpi-fonts-4.3.0-2.90.55.i386.rpm
c932d2d854bd76a8d47b207ed885968b 9/en/os/i386/XFree86-ISO8859-14-100dpi-fonts-4.3.0-2.90.55.i386.rpm
8f26fa23a902ff3aa87cc1b306d72b61 9/en/os/i386/XFree86-ISO8859-14-75dpi-fonts-4.3.0-2.90.55.i386.rpm
35500771e9509c22a91a24ecca7889cf 9/en/os/i386/XFree86-ISO8859-15-100dpi-fonts-4.3.0-2.90.55.i386.rpm
4f2c4afe60b80795249b18b57f8e1311 9/en/os/i386/XFree86-ISO8859-15-75dpi-fonts-4.3.0-2.90.55.i386.rpm
6625628813a5172288c815fe98567c03 9/en/os/i386/XFree86-ISO8859-2-100dpi-fonts-4.3.0-2.90.55.i386.rpm
b9bf0c66282490b6a4fdc1c18997fa6e 9/en/os/i386/XFree86-ISO8859-2-75dpi-fonts-4.3.0-2.90.55.i386.rpm
f24d08da67cc0edd282d260ecc9a37c4 9/en/os/i386/XFree86-ISO8859-9-100dpi-fonts-4.3.0-2.90.55.i386.rpm
a54bcfa0c776f58524bd4848fe326869 9/en/os/i386/XFree86-ISO8859-9-75dpi-fonts-4.3.0-2.90.55.i386.rpm
e7fda0a3519b54141c93369bfa2c1b25 9/en/os/i386/XFree86-Mesa-libGL-4.3.0-2.90.55.i386.rpm
f0ae3a39808eb02a2dc16d0c42f584ec 9/en/os/i386/XFree86-Mesa-libGLU-4.3.0-2.90.55.i386.rpm
8514ddc0d9fdb4c5bd027aed971ecb4c 9/en/os/i386/XFree86-Xnest-4.3.0-2.90.55.i386.rpm
4e68c610ed20ae0f0c03c9025574b968 9/en/os/i386/XFree86-Xvfb-4.3.0-2.90.55.i386.rpm
7756f4250379e0df816326c727c57d22 9/en/os/i386/XFree86-base-fonts-4.3.0-2.90.55.i386.rpm
b60a57b72a287222f7d43169976b23a0 9/en/os/i386/XFree86-cyrillic-fonts-4.3.0-2.90.55.i386.rpm
677698b35ee92580f698920c45b12074 9/en/os/i386/XFree86-devel-4.3.0-2.90.55.i386.rpm
1a329b94a6e5af3fa6588781ec2e3d59 9/en/os/i386/XFree86-doc-4.3.0-2.90.55.i386.rpm
3b17669f2fb11622a86e7ff41c8899a4 9/en/os/i386/XFree86-font-utils-4.3.0-2.90.55.i386.rpm
cbd3f064fa8432540bbf122253f45c96 9/en/os/i386/XFree86-libs-4.3.0-2.90.55.i386.rpm
8d85f153ac1ecc9e115ac21cb95e5a5b 9/en/os/i386/XFree86-libs-data-4.3.0-2.90.55.i386.rpm
bc17f7fed32e35e4f835fcf978e36b17 9/en/os/i386/XFree86-sdk-4.3.0-2.90.55.i386.rpm
17c73f76b3b4056cf86a1a54e4c3e71d 9/en/os/i386/XFree86-syriac-fonts-4.3.0-2.90.55.i386.rpm
5d193e89fe78511c28645f012a14f75c 9/en/os/i386/XFree86-tools-4.3.0-2.90.55.i386.rpm
0ebb93ca3a20723bbaf034834fbd259d 9/en/os/i386/XFree86-truetype-fonts-4.3.0-2.90.55.i386.rpm
25fbea5c33f283050b86a96519484082 9/en/os/i386/XFree86-twm-4.3.0-2.90.55.i386.rpm
e6830e8b842ca4002cc48204363f6079 9/en/os/i386/XFree86-xauth-4.3.0-2.90.55.i386.rpm
32b135e82338a223e985eb2bf3b06ebe 9/en/os/i386/XFree86-xdm-4.3.0-2.90.55.i386.rpm
439856bed9767f63bcd4b56306208251 9/en/os/i386/XFree86-xfs-4.3.0-2.90.55.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is
available from

You can verify each package with the following command:
    rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    md5sum <filename>

8. References:

9. Contact:

The Red Hat security contact is <>.  More contact
details at

Copyright 2003 Red Hat, Inc.
Version: GnuPG v1.0.7 (GNU/Linux)


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