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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0491 TLS FREAK Attack 5 March 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Fortinet FortiMail Publisher: Fortinet Operating System: Network Appliance VMware ESX Server Impact/Access: Access Privileged Data -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Mitigation CVE Names: CVE-2015-0204 Reference: ESB-2015.0448 ESB-2015.0437 ESB-2015.0436 ESB-2015.0401 ESB-2015.0318 ESB-2015.0317 ESB-2015.0291 ESB-2015.0149 ESB-2015.0101 Original Bulletin: http://www.fortiguard.com/advisory/FG-IR-15-007/ - --------------------------BEGIN INCLUDED TEXT-------------------- TLS FREAK Attack FREAK is an attack on SSL/TLS, which allows "Man in the Middle" attackers to decipher and alter HTTPS connections between a server supporting "export-grade" cipher suites and a vulnerable client. It consists in downgrading the connection's encryption from "strong" RSA to "export-grade" RSA, by leveraging a vulnerability (CVE-2015-0204) on the client side. The "export-grade" encryption is weak enough to be broken by the attacker, who can then decipher and alter the connection. Impact MitM that could lead to traffic alteration or decryption. Affected Products FortiMail all versions. Solutions As a workaround the following command must be set to prevent weak algorithms ciphers to be negotiated on FortiMail: config system global set strong-crypto enable end References https://freakattack.com/ - --------------------------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 =========================================================================== 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 iQIVAwUBVPee1RLndAQH1ShLAQIl1A//am0QJYWqlts1FwWpHO0zacGe9XKT1GzR sqYME13ulG9S0+vlBfsCzVwpMG4jI4bdr7lstWDMoLN0om6Ar3gEM0ARUyyFz/kJ ZgFvtKL0FTwcsYJNMNqqvUyOH23c8IjrSqX1SW6X/Hfnl1FTUTtqZCJfmH4yzklq MJuXZ+XftlIRjQdwXSbsX86Voe+EXC31/++WaxvlgCGodO3Ptqfg3oAK3FbgIyYt gj+EBnGKJRC1bkYGITqNKzTPzkqVLHcceuGG9POewSLUcKy6RdwKgOl9XCHecNjp LU4eW8xO9v6yauQmoWNX8wtWcvT8usAP6Ir3C2wk/nfoD4tSkEhojzwRSl1zNrtl lbc0VtcVBRDujS7og7Df7Zjkyu5mveH4+TM9EQTzpsSxlnz8b09PnsailtojytYy klLxPiZVoc0v4F2dmjM6uVUj1dsdwFzHNUkvd7DOs49p+314ZCyuTjoPFvEXrdmO rcvlcOgTadElgBwBorXPGvKtHlc/HyEDwwEa+QPrGVp9U80vEN0QCU1qgS52Jm+4 o7v57fCgoUQduhtfnypYA6ukwz/AoODMshiMavV3t2JoAZ4/9YTPJn34tVLO4kaf rFNou6HjTLq6U0KzHBxygbFmz3Gd+5neSPaoGuhEUSBge6e4pzgx1aIF5tVazBqB cs6ysqPlJyI= =MHwN -----END PGP SIGNATURE-----