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USN-913-1: libpng vulnerabilities

16 March 2010

libpng vulnerabilities

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Releases

Packages

Details

It was discovered that libpng did not properly initialize memory when
decoding certain 1-bit interlaced images. If a user or automated system
were tricked into processing crafted PNG images, an attacker could possibly
use this flaw to read sensitive information stored in memory. This issue
only affected Ubuntu 6.06 LTS, 8.04 LTS, 8.10 and 9.04. (CVE-2009-2042)

It was discovered that libpng did not properly handle certain excessively
compressed PNG images. If a user or automated system were tricked into
processing a crafted PNG image, an attacker could possibly use this flaw to
consume all available resources, resulting in a denial of service.
(CVE-2010-0205)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

After a standard system upgrade you need to reboot your computer to effect
the necessary changes.