Mozilla Network Security Service: Remote execution of arbitrary

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Gentoo Linux Security Advisory                          
GLSA 200703-22
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                                            http://security.gentoo.or
g/
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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-200
7-0008
  [ 2 ] CVE-2007-0009
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-200
7-0009

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

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

  ht
tp://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
securitygentoo.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