[ GLSA 200512-10 ] Opera: Command-line URL shell command injection

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200512-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Opera: Command-line URL shell command injection
      Date: December 18, 2005
      Bugs: #113239
        ID: 200512-10

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Synopsis
========

Lack of URL validation in Opera command-line wrapper could be abused to
execute arbitrary commands.

Background
==========

Opera is a multi-platform web browser.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  www-client/opera       < 8.51                             >= 8.51

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

Peter Zelezny discovered that the shell script used to launch Opera
parses shell commands that are enclosed within backticks in the URL
provided via the command line.

Impact
======

A remote attacker could exploit this vulnerability by enticing a user
to follow a specially crafted URL from a tool that uses Opera to open
URLs, resulting in the execution of arbitrary commands on the targeted
machine.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Opera users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/opera-8.51"

References
==========

  [ 1 ] CVE-2005-3750
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3750
  [ 2 ] Opera 8.51 Changelog
        http://www.opera.com/docs/changelogs/linux/851/

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

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

  http://security.gentoo.org/glsa/glsa-200512-10.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 2005 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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