USN-960-1: libpng vulnerabilities

Ubuntu Security Notice USN-960-1

8th July, 2010

libpng vulnerabilities

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

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software description

  • libpng

Details

It was discovered that libpng did not properly handle certain malformed PNG
images. If a user or automated system were tricked into opening a crafted
PNG file, an attacker could cause a denial of service or possibly execute
arbitrary code with the privileges of the user invoking the program.
(CVE-2010-1205)

It was discovered that libpng did not properly handle certain malformed 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-2010-2249)

Update instructions

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

Ubuntu 10.04 LTS:
libpng12-0 1.2.42-1ubuntu2.1
Ubuntu 9.10:
libpng12-0 1.2.37-1ubuntu0.2
Ubuntu 9.04:
libpng12-0 1.2.27-2ubuntu2.2
Ubuntu 8.04 LTS:
libpng12-0 1.2.15~beta5-3ubuntu0.3
Ubuntu 6.06 LTS:
libpng12-0 1.2.8rel-5ubuntu0.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2010-1205, CVE-2010-2249