full-disclosure - [PLSA 2008-70] GnuTLS: Security Bypass

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Message-ID: <491D34C9.4020807@pardus.org.tr>
Date: Fri, 14 Nov 2008 10:20:25 +0200
From: Pınar Yanardağ <pinar@...dus.org.tr>
To: pardus-security@...dus.org.tr
Cc: full-disclosure@...ts.grok.org.uk
Subject: [PLSA 2008-70] GnuTLS: Security Bypass

------------------------------------------------------------------------
Pardus Linux Security Advisory 2008-70            security@...dus.org.tr
------------------------------------------------------------------------
      Date: 2008-11-14
  Severity: 3
      Type: Remote
------------------------------------------------------------------------

Summary
=======

A vulnerability has been reported in GnuTLS, which can be exploited  by 
malicious people to bypass certain security restrictions. 

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

The vulnerability is caused due to an error when validating  the  X.509 
certificate chain and can be exploited to spoof  arbitrary  names  e.g. 
during a Man-in-the-Middle (MitM) attack. 

Affected packages:

  Pardus 2008:
    gnutls, all before 2.2.5-13-5

Resolution
==========

There are update(s) for gnutls. You can update them via Package Manager 
or with a single command from console: 

    pisi up gnutls

References
==========

  * http://bugs.pardus.org.tr/show_bug.cgi?id=8626
  * http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3215
  * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4989

------------------------------------------------------------------------

-- 
Pardus Security Team
http://security.pardus.org.tr

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