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Category:   Application (VPN)  >   OpenSSH Vendors:   OpenSSH.org
OpenSSH Legacy Certificates May Disclose Stack Contents to Remote Users
SecurityTracker Alert ID:  1025028
SecurityTracker URL:  http://securitytracker.com/id/1025028
CVE Reference:   CVE-2011-0539   (Links to External Site)
Updated:  Feb 14 2011
Original Entry Date:  Feb 7 2011
Impact:   Disclosure of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.6, 5.7
Description:   A vulnerability was reported in OpenSSH. A remote user may be able to obtain stack contents via legacy certificates.

Legacy certificates generated by OpenSSH may contain data from the stack.

Versions 5.6 and 5.7 are affected when generating legacy certificates using the "-t" option on the ssh-keygen CA command-line.

The vendor was notified on January 26, 2011.

Mateusz Kocielski reported this vulnerability.

Impact:   A remote user may be able to obtain stack contents via legacy certificates.
Solution:   The vendor has issued a fix (5.8).

The vendor's advisory is available at:

http://www.openssh.com/txt/legacy-cert.adv

Vendor URL:  www.openssh.com/txt/release-5.8 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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