[ GLSA 200604-13 ] fbida: Insecure temporary file creation

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200604-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: fbida: Insecure temporary file creation
      Date: April 23, 2006
      Bugs: #129470
        ID: 200604-13

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Synopsis
========

fbida is vulnerable to linking attacks, potentially allowing a local
user to overwrite arbitrary files.

Background
==========

fbida is a collection of image viewers and editors for the framebuffer
console and X11.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-gfx/fbida      < 2.03-r3                         >= 2.03-r3

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

Jan Braun has discovered that the "fbgs" script provided by fbida
insecurely creates temporary files in the "/var/tmp" directory.

Impact
======

A local attacker could create links in the temporary file directory,
pointing to a valid file somewhere on the filesystem. When an affected
script is called, this could result in the file being overwritten with
the rights of the user running the script.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All fbida users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/fbida-2.03-r3"

References
==========

  [ 1 ] CVE-2006-1695
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1695

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

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

  http://security.gentoo.org/glsa/glsa-200604-13.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
http://bugs.gentoo.org.

License
=======

Copyright 2006 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/2.0

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