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Ubuntu Security Notice USN-2211-1
May 14, 2014

libxfont vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 14.04 LTS
• Ubuntu 13.10
• Ubuntu 12.10
• Ubuntu 12.04 LTS
• Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in libXfont.

Software Description:

• libxfont: X11 font rasterisation library

Details:

Ilja van Sprundel discovered that libXfont incorrectly handled font
metadata file parsing. A local attacker could use this issue to cause
libXfont to crash, or possibly execute arbitrary code in order to gain
privileges. (CVE-2014-0209)

Ilja van Sprundel discovered that libXfont incorrectly handled X Font
Server replies. A malicious font server could return specially-crafted data
that could cause libXfont to crash, or possibly execute arbitrary code.
This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS, Ubuntu 12.10
and Ubuntu 13.10. (CVE-2014-0210, CVE-2014-0211)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS:
libxfont1 1:1.4.7-1ubuntu0.1

Ubuntu 13.10:
libxfont1 1:1.4.6-1ubuntu0.2

Ubuntu 12.10:
libxfont1 1:1.4.5-2ubuntu0.12.10.2

Ubuntu 12.04 LTS:
libxfont1 1:1.4.4-1ubuntu0.2

Ubuntu 10.04 LTS:
libxfont1 1:1.4.1-1ubuntu0.3

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2211-1
CVE-2014-0209, CVE-2014-0210, CVE-2014-0211

Package Information:
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.7-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.6-1ubuntu0.2
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.5-2ubuntu0.12.10.2
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.4-1ubuntu0.2
https://launchpad.net/ubuntu/+source/libxfont/1:1.4.1-1ubuntu0.3

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