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Category:   Application (VPN)  >   OpenSSH Vendors:   OpenSSH.org
OpenSSH GSSAPI Authentication Abort Error Lets Remote Users Determine Valid Usernames
SecurityTracker Alert ID:  1016939
SecurityTracker URL:  http://securitytracker.com/id/1016939
CVE Reference:   CVE-2006-5052   (Links to External Site)
Date:  Sep 28 2006
Impact:   Disclosure of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.3 and prior versions
Description:   A vulnerability was reported in OpenSSH in the portable version. A remote user may be able to determine valid usernames on the target system.

A remote user can exploit a GSSAPI authentication abort error to determine the validity of usernames on some platforms.

Impact:   A remote user may be able to determine the validity of usernames on the target system.
Solution:   The vendor has issued a fixed version (4.4).

The OpenSSH advisory is available at:

http://www.openssh.org/txt/release-4.4

Vendor URL:  www.openssh.org/txt/release-4.4 (Links to External Site)
Cause:   State error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 7 2007 (Red Hat Issues Fix) OpenSSH GSSAPI Authentication Abort Error Lets Remote Users Determine Valid Usernames   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 5.
Nov 16 2007 (Red Hat Issues Fix) OpenSSH GSSAPI Authentication Abort Error Lets Remote Users Determine Valid Usernames   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 4.



 Source Message Contents

Date:  Wed, 27 Sep 2006 22:27:54 -0400
Subject:  OpenSSH vulnerability


http://www.openssh.org/txt/release-4.4

 * On portable OpenSSH, fix a GSSAPI authentication abort that could
   be used to determine the validity of usernames on some platforms.

CVE-2006-5052
 
 


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