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Gentoo Linux Security Advisory                           GLSA 200703-22
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  Severity: Normal
     Title: Mozilla Network Security Service: Remote execution of
            arbitrary code
      Date: March 20, 2007
      Bugs: #165555
        ID: 200703-22

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Synopsis
========

The Mozilla Network Security Services libraries are vulnerable to two
buffer overflows that could result in the remote execution of arbitrary
code.

Background
==========

The Mozilla Network Security Service is a library implementing security
features like SSL v2/v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12,
S/MIME and X.509 certificates.

Affected packages
=================

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  dev-libs/nss      < 3.11.5                              >= 3.11.5

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

iDefense has reported two potential buffer overflow vulnerabilities
found by researcher "regenrecht" in the code implementing the SSLv2
protocol.

Impact
======

A remote attacker could send a specially crafted SSL master key to a
server using NSS for the SSLv2 protocol, or entice a user to connect to
a malicious server with a client-side application using NSS like one of
the Mozilla products. This could trigger the vulnerabilities and result
in the possible execution of arbitrary code with the rights of the
vulnerable application.

Workaround
==========

Disable the SSLv2 protocol in the applications using NSS.

Resolution
==========

All NSS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/nss-3.11.5"

References
==========

  [ 1 ] CVE-2007-0008
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0008
  [ 2 ] CVE-2007-0009
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0009

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

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

  http://security.gentoo.org/glsa/glsa-200703-22.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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