[ GLSA 200710-30 ] OpenSSL: Remote execution of arbitrary code

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                        GLSA 200710-30:02
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                                            http://security.gentoo.org/
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  Severity: High
     Title: OpenSSL: Remote execution of arbitrary code
      Date: October 27, 2007
   Updated: October 30, 2007
      Bugs: #195634
        ID: 200710-30:02

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Synopsis
========

OpenSSL contains a vulnerability allowing execution of arbitrary code
or a Denial of Service.

Background
==========

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
purpose cryptography library.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  dev-libs/openssl      >= 0.9.8f                          < 0.9.8f

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

Andy Polyakov reported a vulnerability in the OpenSSL toolkit, that is
caused due to an unspecified off-by-one error within the DTLS
implementation.

Impact
======

A remote attacker could exploit this issue to execute arbitrary code or
cause a Denial of Service. Only clients and servers explicitly using
DTLS are affected, systems using SSL and TLS are not.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenSSL users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8f"

References
==========

  [ 1 ] CVE-2007-4995
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4995

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

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

  http://security.gentoo.org/glsa/glsa-200710-30.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 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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