SSH Tectia Server host key disclosure

sshtectiaserver-host-key-disclosure (21217) The risk level is classified as MediumMedium Risk

Description:

SSH (Secure Shell) Tectia Server could allow a local or remote authenticated attacker to obtain the host key caused by a vulnerability with improper file permissions. A local or remote authenticated attacker could access the host identification key without the required administrative privilege to copy the host key and install on the targeted Web server to masquerade as the targeted original server.


Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of SSH Tectia Server (4.3.2 or later), available from the SSH Tectia Server Download Web page. See References.

References:

  • CIAC INFORMATION BULLETIN P-257: SSH Tectia Server Private Key Permission Vulnerability in Windows.
  • SSH : Company : Newsroom: SSH Tectia Server Private Key Permission Vulnerability in Windows.
  • SSH Tectia Server Download Web page: SSH Tectia Server Downloads.
  • BID-14116: SSH Secure Shell/Tectia Server on Windows Host Identification Key Permission Vulnerability
  • CVE-2005-2146: SSH Tectia Server 4.3.1 and earlier, and SSH Secure Shell for Windows Servers, uses insecure permissions when generating the Secure Shell host identification key, which allows local users to access the key and spoof the server.
  • SA15894: SSH Tectia Server Insecure Private Key Permissions
  • US-CERT VU#973635: Some SSH servers on Microsoft Windows set insecure permissions for the host identification key file

Platforms Affected:

  • SSH Secure Shell
  • SSH Tectia Server 4.3
  • SSH Tectia Server 4.3.1

Reported:

Jun 30, 2005

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

Return to the main page