[ GLSA 201101-05 ] OpenAFS: Arbitrary code execution

[Stefan Behte <craig () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 201101-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: OpenAFS: Arbitrary code execution
      Date: January 16, 2011
      Bugs: #265538
        ID: 201101-05

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Synopsis
========

The cache manager of OpenAFS contains several bugs resulting in remote
execution of arbitrary code.

Background
==========

OpenAFS is a distributed file system.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  net-fs/openafs       < 1.4.9                             >= 1.4.9

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

Two vulnerabilites were discovered:

* Simon Wilkinson discovered from a bug report by Toby Blake that the
  cache manager of OpenAFS contains a heap-based buffer overflow which
  is related to the use of the ERR_PTR macro (CVE-2009-1250).

* A pointer dereference bug when using XDR arrays was discovered by
  Simon Wilkinson, with assistance from Derrick Brashear and Jeffrey
  Altman. (CVE-2009-1251).

Impact
======

The vulnerabilites might allow remote unauthenticated attackers to
cause a Denial of Service (system crash) and possibly execute arbitrary
code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenAFS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-fs/openafs-1.4.9"

References
==========

  [ 1 ] CVE-2009-1250
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1250
  [ 2 ] CVE-2009-1251
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1251

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

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

  http://security.gentoo.org/glsa/glsa-201101-05.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 2011 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

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