bugtraq - Re: New OpenSSL releases fix denial of service attacks [17 March 2004]

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Date: Wed, 17 Mar 2004 11:23:57 -0400
From: Marc Bejarano <bugtraq@...j.org>
To: Mark J Cox <mark@....com>
Cc: <bugtraq@...urityfocus.com>
Subject: Re: New OpenSSL releases fix denial of service attacks [17
  March 2004]

At 09:12 3/17/2004, Mark J Cox wrote:
 >OpenSSL Security Advisory [17 March 2004]
 >
 >Updated versions of OpenSSL are now available which correct two
 >security issues:

 >1. Null-pointer assignment during SSL handshake

 >The Common Vulnerabilities and Exposures project (cve.mitre.org) has
 >assigned the name CAN-2004-0079 to this issue.

 >2. Out-of-bounds read affects Kerberos ciphersuites

 >The Common Vulnerabilities and Exposures project (cve.mitre.org) has
 >assigned the name CAN-2004-0112 to this issue.

according to NISCC Vulnerability Advisory 224012 ( 
http://www.uniras.gov.uk/vuls/2004/224012/index.htm ), there is also a 
third potential DoS that was found with this testing sweep: CVE 
CAN-2004-0081.  quoting from the NISCC advisory:
==
NISCC/224012/3 [OpenSSL 0.9.6]
CAN-2004-0081 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0081
Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool 
uncovered a bug in older versions of OpenSSL 0.9.6 that can lead to a 
Denial of Service attack (infinite loop). This issue was traced to a fix 
that was added to OpenSSL 0.9.6d some time ago. This issue will affect 
vendors that ship older versions of OpenSSL with backported security patches.
==

marc