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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0380 Security Bulletin: TLS fallback protection is available in IBM DataPower appliances 17 February 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM DataPower Gateways Publisher: IBM Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2014-3566 Reference: ASB-2014.0122 Original Bulletin: http://www-01.ibm.com/support/docview.wss?uid=swg21696753 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: TLS fallback protection is available in IBM DataPower appliances Security Bulletin Document information More support for: IBM DataPower Gateways General Software version: 5.0.0, 6.0.0, 6.0.1, 7.0.0 Operating system(s): Firmware Reference #: 1696753 Modified date: 2015-02-16 Summary TLS Fallback signaling cipher suite value for preventing protocol downgrade attacks (TLS_FALLBACK_SCSV) is an update to the TLS protocol, currently in an IETF draft document. This has been incorporated into IBM DataPower appliances. Vulnerability Details DataPower has added support for TLS_FALLBACK_SCSV to allow applications to block the ability for a MITM attacker to force a protocol downgrade. Some client applications (such as browsers) will reconnect using a downgraded protocol to work around interoperability bugs in older servers. This could be exploited by an active man-in-the-middle to downgrade connections to a lower protocol (like SSL 3.0) even if both sides of the connection support higher protocols. Lower protocols such as SSL 3.0 contain a number of weaknesses including POODLE (CVE-2014-3566). Affected Products and Versions TLS fallback protection is not available in all IBM DataPower products and versions through 6.0.0.11, 6.0.1.7, 7.0.0.4. Note that 7.1.x versions have this support. Remediation/Fixes TLS fallback protection is available in 6.0.0.12, 6.0.1.8, 7.0.0.5, and 7.1.0.0. Refer APAR IT05922 for URLs to download the fix. 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 Vulnerability in SSLv3 affects DataPower (CVE-2014-3566) https://tools.ietf.org/html/draft-ietf-tls-downgrade-scsv-00 https://www.openssl.org/~bodo/ssl-poodle.pdf Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 11 Feb 2015: 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. 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