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Category:   Application (Security)  >   SSH Tectia Server Vendors:   SSH Communications
SSH Tectia Server Host-Based Authentication Error May Let Certain Remote Users Access the Target System
SecurityTracker Alert ID:  1015368
SecurityTracker URL:
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 16 2005
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.0.0 (A, F, and T)
Description:   A vulnerability was reported in SSH Tectia Server. A remote user can login to the target system in certain configurations.

The SSH Tectia Server contains a vulnerability in the host-based authentication implementation. Systems that use host-based authentication may be affected.

A remote user can login to a system that is specified as an authorized host in the target server's SSH configuration. Then, if the target server is configured to allow user logins with host-based authentication only, then the remote user can login with the wrong authentication credentials.

Host-based authentication is not enabled by default.

SSH Tectia Server (M) for IBM mainframes is not affected.

The vendor's advisory is available at:

Impact:   A remote user may be able login to the target system in certain configurations.
Solution:   The vendor has issued a fixed version (5.0.1).

The vendor has also issued an update for version 5.0.0, available at:

Vendor URL: (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.

 Source Message Contents

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