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Gentoo Linux Security Advisory                           GLSA 200711-21
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                                            https://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:

  https://security.gentoo.org/glsa/200711-21

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
https://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.

https://creativecommons.org/licenses/by-sa/2.5/
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