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Gentoo Linux Security Advisory                           GLSA 201009-09
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: fence: Multiple symlink vulnerabilites
      Date: September 29, 2010
      Bugs: #240576
        ID: 201009-09

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Synopsis
=======
fence contains multiple programs containing vulnerabilites that may
allow local users to overwrite arbitrary files via a symlink attack.

Background
=========
fence is an I/O group fencing system.

Affected packages
================
    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  sys-cluster/fence      < 2.03.09                      Vulnerable!
    -------------------------------------------------------------------
     NOTE: Certain packages are still vulnerable. Users should migrate
           to another package if one is available or wait for the
           existing packages to be marked stable by their
           architecture maintainers.

Description
==========
The fence_apc, fence_apc_snmp (CVE-2008-4579) and fence_manual
(CVE-2008-4580) programs contain symlink vulnerabilites.

Impact
=====
These vulnerabilities may allow arbitrary files to be overwritten with
root privileges.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
Gentoo discontinued support for fence. All fence users should uninstall
and choose another software that provides the same functionality.

    # emerge --unmerge sys-cluster/fence

References
=========
  [ 1 ] CVE-2008-4579
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4579
  [ 2 ] CVE-2008-4580
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4580

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

  https://security.gentoo.org/glsa/201009-09

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 2010 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.

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