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Gentoo Linux Security Advisory                        GLSA 200710-30:02
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                                            https://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:

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

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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