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Category:   Application (E-mail Server)  >   Sendmail Vendors:   Sendmail Consortium
(Sun Issues Fix) Sendmail NULL Character Flaw in Common Name Field Lets Remote Users Spoof Certficiates
SecurityTracker Alert ID:  1024087
SecurityTracker URL:  http://securitytracker.com/id/1024087
CVE Reference:   CVE-2009-4565   (Links to External Site)
Date:  Jun 11 2010
Impact:   Modification of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 8.14.4
Description:   A vulnerability was reported in Sendmail. A remote user can spoof certificates of arbitrary sites.

A remote user can create a certificate with a specially crafted Common Name field that contains a NULL character. Once the certificate is signed by a Certificate Authority, the certificate can be used to spoof a target site's certificate.

Impact:   A remote user can spoof certificates of arbitrary sites.
Solution:   Sun has issued a fix.

SPARC Platform

* Solaris 10 with patch 142436-04 or later
* OpenSolaris based upon builds snv_132 or later

x86 Platform

* Solaris 10 with patch 142437-04 or later
* OpenSolaris based upon builds snv_132 or later

The Sun advisory is available at:

http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1

Vendor URL:  www.sendmail.org/releases/8.14.4 (Links to External Site)
Cause:   Input validation error
Underlying OS:  UNIX (Solaris - SunOS)
Underlying OS Comments:  10, OpenSolaris

Message History:   This archive entry is a follow-up to the message listed below.
Dec 31 2009 Sendmail NULL Character Flaw in Common Name Field Lets Remote Users Spoof Certficiates



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