[Full-disclosure] [ GLSA 200801-14 ] Blam: User-assisted execution of arbitrary code

[Robert Buchholz]

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Gentoo Linux Security Advisory                           GLSA 200801-14
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Blam: User-assisted execution of arbitrary code
      Date: January 27, 2008
      Bugs: #199841
        ID: 200801-14

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Synopsis
========

Blam doesn't properly handle environment variables, potentially
allowing a local attacker to execute arbitrary code.

Background
==========

Blam is an RSS and Atom feed reader for GNOME written in C#.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  net-news/blam       < 1.8.4                              >= 1.8.4

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

The "/usr/bin/blam" script sets the "LD_LIBRARY_PATH" environment
variable incorrectly, which might result in the current working
directory (.) being included when searching for dynamically linked
libraries of the Mono Runtime application.

Impact
======

A local attacker could entice a user to run Blam in a directory
containing a specially crafted library file which could result in the
execution of arbitrary code with the privileges of the user running
Blam.

Workaround
==========

Do not run Blam from an untrusted working directory.

Resolution
==========

All Blam users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-news/blam-1.8.4"

References
==========

  [ 1 ] CVE-2005-4790
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4790

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

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

  http://security.gentoo.org/glsa/glsa-200801-14.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 at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2008 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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