Security Advisory Updated XFree86 packages fix privilege escalation vulnerability

Advisory: RHSA-2004:059-19
Type: Security Advisory
Severity: N/A
Issued on: 2004-02-13
Last updated on: 2004-02-13
Affected Products: Red Hat Linux 9
CVEs ( CVE-2004-0083


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

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.


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:

Updated packages

Red Hat Linux 9

Missing file
    MD5: d02a7a7d68a89eb6330824a46c944c81
Missing file
    MD5: d2229ab25ab6bcb7fa46b31b0494fb99
Missing file
    MD5: 481ce1f3cd1ed944c95c8bbf1b3e0905
Missing file
    MD5: c8a788ef8c475112bdceeccfe6a3546e
Missing file
    MD5: c932d2d854bd76a8d47b207ed885968b
Missing file
    MD5: 8f26fa23a902ff3aa87cc1b306d72b61
Missing file
    MD5: 35500771e9509c22a91a24ecca7889cf
Missing file
    MD5: 4f2c4afe60b80795249b18b57f8e1311
Missing file
    MD5: 6625628813a5172288c815fe98567c03
Missing file
    MD5: b9bf0c66282490b6a4fdc1c18997fa6e
Missing file
    MD5: f24d08da67cc0edd282d260ecc9a37c4
Missing file
    MD5: a54bcfa0c776f58524bd4848fe326869
Missing file
    MD5: e7fda0a3519b54141c93369bfa2c1b25
Missing file
    MD5: f0ae3a39808eb02a2dc16d0c42f584ec
Missing file
    MD5: 8514ddc0d9fdb4c5bd027aed971ecb4c
Missing file
    MD5: 4e68c610ed20ae0f0c03c9025574b968
Missing file
    MD5: 7756f4250379e0df816326c727c57d22
Missing file
    MD5: b60a57b72a287222f7d43169976b23a0
Missing file
    MD5: 677698b35ee92580f698920c45b12074
Missing file
    MD5: 1a329b94a6e5af3fa6588781ec2e3d59
Missing file
    MD5: 3b17669f2fb11622a86e7ff41c8899a4
Missing file
    MD5: cbd3f064fa8432540bbf122253f45c96
Missing file
    MD5: 8d85f153ac1ecc9e115ac21cb95e5a5b
Missing file
    MD5: bc17f7fed32e35e4f835fcf978e36b17
Missing file
    MD5: 17c73f76b3b4056cf86a1a54e4c3e71d
Missing file
    MD5: 5d193e89fe78511c28645f012a14f75c
Missing file
    MD5: 0ebb93ca3a20723bbaf034834fbd259d
Missing file
    MD5: 25fbea5c33f283050b86a96519484082
Missing file
    MD5: e6830e8b842ca4002cc48204363f6079
Missing file
    MD5: 32b135e82338a223e985eb2bf3b06ebe
Missing file
    MD5: 439856bed9767f63bcd4b56306208251

Bugs fixed (see bugzilla for more information)

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


These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:

The Red Hat security contact is More contact details at