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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1064 Security Bulletin: Vulnerability in RC4 stream cipher affects Rational Developer for i, Rational Developer for AIX and Linux, and Rational Developer for Power Systems Software (CVE-2015-2808) 17 April 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Rational Developer Publisher: IBM Operating System: Linux variants Windows Impact/Access: Access Privileged Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-2808 Reference: ESB-2015.1060 ESB-2015.1041 ESB-2015.1037 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=swg21882902 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerability in RC4 stream cipher affects Rational Developer for i, Rational Developer for AIX and Linux, and Rational Developer for Power Systems Software (CVE-2015-2808) Document information More support for: Rational Developer for i General Information Software version: 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1 Operating system(s): Linux, Windows Software edition: Modernization Tools- EGL Edition, Modernization Tools- Java Edition, RPG and COBOL Tools Reference #: 1882902 Modified date: 2015-04-16 Security Bulletin Summary The RC4 "Bar Mitzvah" Attack for SSL/TLS affects Rational Developer for i, Rational Developer for AIX and Linux, and Rational Developer for Power Systems Software. 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 Product Name Versions Affected Rational Developer for Power Systems Software 7.6, 7.6.0.1, 7.6.0.2, 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.3, 8.0.3.1, 8.5, 8.5.1 Rational Developer for i 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1 Rational Developer for AIX and Linux, AIX COBOL Edition 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1 Rational Developer for AIX and Linux, C/C++ Edition 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1 Remediation/Fixes Product VRMF Remediation/First Fix Rational Developer for Power Systems Software 7.6 through 8.5.1 None. Rational Developer for i 9.0 through to 9.1 For Modernization Tools- Java Edition using Cordova, apply IBM SDK for Node.js 1.1.0.14 to the Cordova platform in the product. Installation instructions for applying the update to the Cordova platform in the product can be found here: Upgrading the IBM SDK for Node.js used by Cordova Rational Developer for AIX and Linux 9.0 through to 9.1 For all versions using Cordova, apply IBM SDK for Node.js 1.1.0.14 to the Cordova platform in the product. Installation instructions for applying the update to the Cordova platform in the product can be found here: Upgrading the IBM SDK for Node.js used by Cordova Workarounds and Mitigations In addition to the fixes supplied above, if you are using any of the following products: Rational Developer for Power Systems Software 8.5 Rational Developer for i 9.0, and 9.1 Rational Developer for AIX and Linux 9.0, and 9.1 then the following steps can be used to remove RC4 from the list of available algorithms: 1. Ensure the product is not running. 2. Locate the java.security file used by the product: Rational Agent Controller: install folder/AgentController/jre/lib/security/java.security Rational Application Developer for WebSphere Software: install folder/jdk/jre/lib/security/java.security Rational Build Utility: install folder/jdk/jre/lib/security/java.security 3. Edit the java.security file with a text editor and locate the line: jdk.tls.disabledAlgorithms=SSLv3 4. Add RC4 to the list of disabled algorithms; For example: jdk.tls.disabledAlgorithms=SSLv3, RC4 5. Save the file and restart the product. You should verify applying this configuration change does not cause any compatibility issues. Not disabling the RC4 stream cipher 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. 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 None Change History * 15 April 2015: Original copy 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. Cross reference information Segment Product Platform Version Edition Software Development Rational Developer for AIX and Linux Linux, Windows 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1 AIX COBOL Edition, C/C++ Edition Software Development Rational Developer for i Linux, Windows 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1 RPG and COBOL Tools, Modernization Tools- Java Edition, Modernization Tools- EGL Edition Software Development Rational Developer for Power Systems Windows, Linux 7.6, 7.6.0.1, 7.6.0.2, 8.0, 8.0.0.1, 8.0.0.2, Software 8.0.0.3, 8.0.3, 8.0.3.1, 8.5, 8.5.1 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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 iQIVAwUBVTCKGRLndAQH1ShLAQIQbg/+J3JudBHa6IJC01RV/wEJyH/k/+dD7XVA +b/t2Is/X1562PU8nGzmvrqD/QhEnMEfldG44f57XrLbDvrm9SCrkxjAHKB2MyW+ jWrCc9dcv9QGRssMylYQNwQ+qp9GXCXQ2p/u5d1Wj4hkmzizgJdqMq/1KA0l39PQ OJdeQTRDZh2AZDoZrxl1CfrVd6sf4AXzo5DJ/0h3aOF7Lx2BIgG6YLUuQRdSdLey fcgpYnfPmvq9m+fbeD8GCQTeWkcXAMRQHoKn/2Lr2SH1T0mlq6nqmq6+8hInS0OP bgBd0U+etFvaER+b1LIdXn3IACDdmyGuPfL6JnlL47kqX+E8tAhFe0NzUOkkBXh/ kWXbTjpnyewm4dqcJccYqBlw6oIAgBns3Facs20CSATdOJ0uSmTlrXkkNAfSV4wy eRD0MEHfkWrUtUl4wbsg5be77TdtM54xeDb//o5LHshhviFcgExRbxev+V1UdMF5 5NC0WYxbjQoswFmjALVll/zzGDza5Nequ68evciDddyVpVO0XvOBuZ9T+SH1r2Vk UTYpRXSu8LY2XDTM2wrxMgfMZJMt9XwvL+U3AMMUL2MLxl+ubDByz8+GufOQ/CqE uIXiuJeqN82sGhjk6lZKa480NZo0P6IYRpVYNmLNshueYbSHGm1855T6xyqX6Biv BGEHaj6XECo= =2DkH -----END PGP SIGNATURE-----