bugtraq - [ GLSA 200711-21 ] Bochs: Multiple vulnerabilities

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Date: Sun, 18 Nov 2007 00:58:21 +0100
From: Pierre-Yves Rofes <py@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200711-21 ] Bochs: Multiple vulnerabilities

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Gentoo Linux Security Advisory                           GLSA 200711-21
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Bochs: Multiple vulnerabilities
      Date: November 17, 2007
      Bugs: #188148
        ID: 200711-21

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Synopsis
========

Multiple vulnerabilities have been discovered in Bochs, possibly
allowing for the execution of arbitrary code or a Denial of Service.

Background
==========

Bochs is a IA-32 (x86) PC emulator written in C++.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  app-emulation/bochs        < 2.3                           >= 2.3

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

Tavis Ormandy of the Google Security Team discovered a heap-based
overflow vulnerability in the NE2000 driver (CVE-2007-2893). He also
discovered a divide-by-zero error in the emulated floppy disk
controller (CVE-2007-2894).

Impact
======

A local attacker in the guest operating system could exploit these
issues to execute code outside of the virtual machine, or cause Bochs
to crash.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Bochs users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-emulation/bochs-2.3"

References
==========

  [ 1 ] CVE-2007-2893
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2893
  [ 2 ] CVE-2007-2894
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2894

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

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

  http://security.gentoo.org/glsa/glsa-200711-21.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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