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Category:   Application (Security)  >   SSH Tectia Server Vendors:   SSH Communications
SSH Tectia Server Bug in input_userauth_passwd_changereq() Lets Remote Users Gain Access to the Target System
SecurityTracker Alert ID:  1027824
SecurityTracker URL:  http://securitytracker.com/id/1027824
CVE Reference:   CVE-2012-5975   (Links to External Site)
Updated:  Dec 11 2012
Original Entry Date:  Dec 3 2012
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 6.0.4 - 6.0.20, 6.1.0 - 6.1.12, 6.2.0 - 6.2.5, 6.3.0 - 6.3.2
Description:   A vulnerability was reported in SSH Tectia Server. A remote user can gain access to the target system.

A remote user with knowledge of a valid username can exploit a flaw in input_userauth_passwd_changereq() and force a password change request to login to the target system without authenticating.

The vendor indicates that only "old-style" password authentication is affected. Keyboard-interactive, GSSAPI, and public key authentication methods are not affected.

The original advisory is available at:

http://www.exploit-db.com/exploits/23082/

Kingcope reported this vulnerability.

Impact:   A remote user can gain access to the target system.
Solution:   The vendor has issued a fix (6.0.20, 6.1.13, 6.2.6, 6.3.3).

As a workaround, the vendor recommends disabling "old-style" password authentication by editing the '/etc/ssh2/ssh-server-config.xml' configuration file to comment out the XML line(s) containing '<auth-password />' by changing the line(s) to '<!-- <auth-password /> -->'.

The vendor's advisory is available at:

http://www.ssh.com/index.php/component/content/article/531.html

Vendor URL:  www.ssh.com/index.php/component/content/article/531.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)
Underlying OS Comments:  Linux/UNIX is affected; Windows/zOS is not affected.

Message History:   None.


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