Gentoo: 201209-10 Calligra: User-assisted execution of arbitrary code
Posted by Benjamin D. Thomas   
Gentoo A buffer overflow vulnerability in Calligra could result in the execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 201209-10
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Calligra: User-assisted execution of arbitrary code
     Date: September 25, 2012
     Bugs: #428890
       ID: 201209-10

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Synopsis
========

A buffer overflow vulnerability in Calligra could result in the
execution of arbitrary code.

Background
==========

Calligra is an office suite by KDE.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-office/calligra         < 2.4.3-r1               >= 2.4.3-r1

Description
===========

An error in the read() function in styles.cpp could cause a heap-based
buffer overflow.

Impact
======

A remote attacker could entice a user to open a specially crafted ODF
file, possibly resulting in execution of arbitrary code with the
privileges of the process or a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Calligra users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-office/calligra-2.4.3-r1"

References
==========

[ 1 ] CVE-2012-3456
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3456

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 http://security.gentoo.org/glsa/glsa-201209-10.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License

Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5