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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1514 Security Bulletin: Vulnerability with Diffie-Hellman ciphers may affect WebSphere Business Compass (CVE-2015-4000) 11 June 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere Business Compass Publisher: IBM Operating System: AIX Linux variants Windows Impact/Access: Access Privileged Data -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Mitigation CVE Names: CVE-2015-4000 Reference: ESB-2015.1510 ESB-2015.1486 ESB-2015.1470 ESB-2015.1469 ESB-2015.1466 ESB-2015.1463 ESB-2015.1455 ESB-2015.1454 ESB-2015.1453 ESB-2015.1452 ESB-2015.1445 ESB-2015.1443 ESB-2015.1432 ESB-2015.1425 Original Bulletin: http://www-01.ibm.com/support/docview.wss?uid=swg21959353 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerability with Diffie-Hellman ciphers may affect WebSphere Business Compass (CVE-2015-4000) Security Bulletin Document information More support for: WebSphere Business Compass General Software version: 7.0.0.4 Operating system(s): AIX, Linux, Windows Reference #: 1959353 Modified date: 2015-06-08 Summary The LogJam Attack on Diffie-Hellman ciphers (CVE-2015-4000) may affect some configurations of IBM WebSphere Application Server Full Profile that is shipped as a component of WebSphere Business Compass. The IBM HTTP Server used by WebSphere Application Server is not affected. Vulnerability Details CVEID: CVE-2015-4000 DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a DHE_EXPORT ciphersuite choice. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to 512-bit export-grade cipher. Successful exploitation could allow an attacker to recover the session key as well as modify the contents of the traffic. This vulnerability is commonly referred to as "Logjam". CVSS Base Score: 4.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) Affected Products and Versions WebSphere Business Compass V7.0.0.4. Remediation/Fixes Consult the security bulletin Security Bulletin: Vulnerability with Diffie-Hellman ciphers may affect IBM WebSphere Application Server (CVE-2015-4000) for vulnerability details and information about fixes. Workarounds and Mitigations None Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS Guide On-line Calculator V2 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Acknowledgement Reported to IBM by The WeakDH team at https://weakdh.org Change History 2015-06-08: Original Version Published *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. - --------------------------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 iQIVAwUBVXkToBLndAQH1ShLAQLbDA//WAd5zz6wSX7TYsfoisMEGHpsjMU2e2Du 0/PTFzVkJalTu0EDuBuQ6JTCgTKqWkBKIqd3sk2KirsrN1mSB4U8deFjgyJMu3tp LBBwRKoDY9nljo2/FxbrE8LCP52iQf0eOvuOp1VU6WmZaDym+k2DRZbA8YVwSjFC rDoQNihK7+xSqSOtWMsmxarQCfzCY3X2sN49JNnK/lwPvXmkp7wHzNIec84hAOGI hWDW4VWFuWibgqFKESajEFCiOB49zsFVE619Nd1mi04Jk/BGKcQF2mmuX1ztlL9T WpoBIYelorn3a8kReT8EU6p4brleDSV7IKKrvLusafC35YFbT+rdebMB8ELrXuOa wwvSoezt2qKPgrRmi9c/Ns+Up4+H98xGpsp8Ftga5Hg6RZ9p5LYRQDM6RJo3NFEO a8Yxgtxx/eIHK6SMf30PLipIGBoiHNSG2IFixTCBUQwTNuOa5SGPW44Tx5PdVfv8 bE34TUw4sKzB6CDFcdq8X/yz4m5LZnwk1Hz2NFiLn7821BlKNfZfxJ96JQN/L6ws auGp0/gr0ICpyKmPlzIywmfKE+lCY9gI9azG+472Xayyii9sCk7RaKTejenLM0Z4 sYHu54UcPjWq/M3I0AoMVa2Y0qhlUoL5XPfnCLrxXCaLqDLhkUEaBE3BgKMSqUHq EOcGd3naL50= =uQFy -----END PGP SIGNATURE-----