USN-1495-1: LibreOffice vulnerabilities

Ubuntu Security Notice USN-1495-1

2nd July, 2012

libreoffice, libreoffice-l10n vulnerabilities

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

  • Ubuntu 11.10
  • Ubuntu 11.04

Summary

LibreOffice could be made to crash or potentially run programs as your login if it opened a specially crafted file.

Software description

  • libreoffice - Office productivity suite
  • libreoffice-l10n - Office productivity suite help

Details

Integer overflows were discovered in the graphics loading code of several
different image types. If a user were tricked into opening a specially
crafted file, an attacker could cause LibreOffice to crash or possibly
execute arbitrary code with the privileges of the user invoking the
program. (CVE-2012-1149)

Sven Jacobi discovered an integer overflow when processing Escher graphics
records. If a user were tricked into opening a specially crafted PowerPoint
file, an attacker could cause LibreOffice to crash or possibly execute
arbitrary code with the privileges of the user invoking the program.
(CVE-2012-2334)

Update instructions

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

Ubuntu 11.10:
libreoffice-l10n-common 1:3.4.4-0ubuntu1.2
libreoffice-core 1:3.4.4-0ubuntu1.2
Ubuntu 11.04:
libreoffice-l10n-common 1:3.3.3-1ubuntu1.2
libreoffice-core 1:3.3.4-0ubuntu1.2

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

After a standard system update you need to restart LibreOffice to make all
the necessary changes.

References

CVE-2012-1149, CVE-2012-2334