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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1089 Security Bulletin: Vulnerability in RC4 stream cipher affects WebSphere Transformation Extender Secure Adapter Collection (CVE-2015-2808) 21 April 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere Transformation Extender Publisher: IBM Operating System: AIX HP Itanium HP-UX Linux variants Solaris Windows Impact/Access: Access Privileged Data -- Remote/Unauthenticated Resolution: Mitigation CVE Names: CVE-2015-2808 Reference: ESB-2015.0962 ESB-2015.0961 ESB-2015.0960 ESB-2015.0958 ESB-2015.0956 ESB-2015.0955 ESB-2015.0954 ESB-2015.0953 ESB-2015.0950.2 ESB-2015.0949.2 ESB-2015.0948.2 ESB-2015.0947.2 ESB-2015.0946.2 ESB-2015.0944.2 Original Bulletin: http://www-01.ibm.com/support/docview.wss?uid=swg21883021 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerability in RC4 stream cipher affects WebSphere Transformation Extender Secure Adapter Collection (CVE-2015-2808) Security Bulletin Document information More support for: WebSphere Transformation Extender Secure Adapter Collection Software version: 8.4.1.1, 8.4.1.2 Operating system(s): AIX, HP Itanium, HP-UX, Linux, Linux zSeries, Solaris, Windows Reference #: 1883021 Modified date: 2015-04-20 Summary The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM WebSphere Transformation Extender Secure Adapter Collection. Vulnerability Details CVEID: CVE-2015-2808 DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol, could allow a remote attacker to obtain sensitive information. An attacker could exploit this vulnerability to remotely expose account credentials without requiring an active man-in-the-middle session. Successful exploitation could allow an attacker to retrieve credit card data or other sensitive information. This vulnerability is commonly referred to as "Bar Mitzvah Attack". CVSS Base Score: 5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) Affected Products and Versions IBM WebSphere Transformation Extender Secure Adapters Collection 8.4.1.1 and 8.4.1.2 Remediation/Fixes Download and install the interim fix for APAR PI39221 from IBM Fix Central. You should verify applying this fix does not cause any compatibility issues. The fix disables RC4 stream cipher by default. If you change the default setting after applying the fix, you will expose yourself to the attack described above. IBM recommends that you review your entire environment to identify other areas where you have enabled the RC4 stream cipher and take appropriate mitigation and remediation actions. 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 Change History 17 April 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. Product Alias/Synonym WTX - --------------------------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. 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