Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                       ESB-2009.0603 -- [Win][Linux]
           F-Secure Messaging Security Gateway: Reduced Security
                               24 June 2009


        AusCERT Security Bulletin Summary

Product:              F-Secure Messaging Security Gateway 5.5.x
Publisher:            F-Secure
Operating System:     Linux variants
Impact:               Reduced Security
Access:               Remote/Unauthenticated

Original Bulletin:    

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Advisory FSC-2009-2
Mail relay vulnerability

Date issued             2009-06-16
Last updated            2009-06-16
Risk level              Medium (Low/Medium/High/Critical)
Brief description       Specially crafted messages may be used to bypass mail 
                        relay restrictions.

Mitigating factors 

    * The issue only affects systems where the SMTP Turbo module is used for 
      mail distribution.
    * Incorrectly relayed messages still pass through spam filtering, which 
      decreases the vulnerability's usefulness for spam relaying.

Affected platforms      All supported platforms

F-Secure Messaging Security Gateway 5.5.x

Risk level              Medium

Notes:  An external attacker can use affected systems as mail relay by using 
        specially crafted SMTP messages. A patch for the problem has been 
        distributed to affected systems. The patch will be installed 
        automatically or wait for the administrators approval depending on 
        system settings. Administrators are urged to approve installation of 
        patch 739 without delay, or verify that automatic installation of 
        this patch has succeeded.

Advisory location: 

Available patches:

F-Secure deliver patches to its supported product versions that are 
vulnerable. See further information on supported products and F-Secures 
Product Lifecycle Policy.

Product                  Versions        Download
F-Secure Messaging 
Security Gateway         5.5.x           Fix available 
                                         in the update channel

Revision history        FSC-2009-06-16

Contact information:    
Support: http://www.f-secure.com/en_EMEA/support/

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