USN-773-1: Pango vulnerability

Ubuntu Security Notice USN-773-1

7th May, 2009

pango1.0 vulnerability

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

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software description

  • pango1.0


Will Drewry discovered that Pango incorrectly handled rendering text with
long glyphstrings. If a user were tricked into displaying specially crafted
data with applications linked against Pango, such as Firefox, an attacker
could cause a denial of service or execute arbitrary code with privileges
of the user invoking the program.

Update instructions

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

Ubuntu 8.10:
libpango1.0-0 1.22.2-0ubuntu1.1
Ubuntu 8.04 LTS:
libpango1.0-0 1.20.5-0ubuntu1.1
Ubuntu 6.06 LTS:
libpango1.0-0 1.12.3-0ubuntu3.1

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to effect
the necessary changes.