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TUCoPS :: Linux :: Gentoo :: b06-1817.htm

Fbida: insecure temporary file creation



fbida: Insecure temporary file creation
fbida: Insecure temporary file creation



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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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