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Category:   Application (VPN)  >   OpenSSH Vendors:   OpenSSH.org
OpenSSH Lets Remote Authenticated Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1026593
SecurityTracker URL:  http://securitytracker.com/id/1026593
CVE Reference:   CVE-2012-0814   (Links to External Site)
Date:  Jan 27 2012
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): openssh-server 1:5.5p1-6+squeeze1 on Debian
Description:   A vulnerability was reported in OpenSSH. A remote authenticated user can obtain potentially sensitive information.

On systems that have multiple forced commands in a '~/.ssh/authorized_keys' file, a remote authenticated user can obtain information about other forced commands, which may include information about other user account names.

The original advisory is available at:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=657445

Bjoern Buerger reported this vulnerability.

[Editor's note: Debian Linux openssh-server 1:5.5p1-6+squeeze1 is affected. OpenSSH 5.6p1 and prior versions may be affected on other Linux systems. OpenBSD prior to 12/24/2010 may be affected.]

Impact:   A remote authenticated user can obtain potentially sensitive information about other forced commands in the authorized_keys on the target system.
Solution:   The vendor has issued a fix.

[Editor's note: No solution was available for Debian at the time of this entry. The upstream version was apparently corrected for OpenBSD on December 24, 2010 (http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth-options.c.diff?r1=1.53;r2=1.54) and for OpenSSH portable in version 5.7p1.]

The Debian advisory is available at:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=657445

Vendor URL:  www.openssh.com/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (OpenBSD)
Underlying OS Comments:  Debian 6; possibly other Linux and BSD systems

Message History:   None.


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