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-----BEGIN PGP SIGNED MESSAGE----- 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 Windows Impact: Reduced Security Access: Remote/Unauthenticated Original Bulletin: http://www.f-secure.com/en_EMEA/support/security-advisory/fsc-2009-2.html - --------------------------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 Products 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: http://www.f-secure.com/en_EMEA/support/security-advisory/fsc-2009-2.html 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/ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFKQYdENVH5XJJInbgRAvK9AJ4hRbMYGl0nkHKoiJKbzrF3LtWBAwCfVJ2k tM8sYT6wtRR8D/X1MCPINks= =O4cW -----END PGP SIGNATURE-----