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TUCoPS :: Linux :: Gentoo :: va3081.htm

OpenSSL: Denial of Service



OpenSSL: Denial of Service
OpenSSL: Denial of Service



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Gentoo Linux Security Advisory                           GLSA 200904-08
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: OpenSSL: Denial of Service
      Date: April 07, 2009
      Bugs: #263751
        ID: 200904-08

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Synopsis
=======
An error in OpenSSL might allow for a Denial of Service when printing
certificate details.

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      < 0.9.8k                          >= 0.9.8k

Description
==========
The ASN1_STRING_print_ex() function does not properly check the
provided length of a BMPString or UniversalString, leading to an
invalid memory access.

Impact
=====
A remote attacker could entice a user or automated system to print a
specially crafted certificate, possibly leading to a Denial of Service.

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-0.9.8k"

References
=========
  [ 1 ] CVE-2009-0590
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0590 

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

http://security.gentoo.org/glsa/glsa-200904-08.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 2009 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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