20 April 2015
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1078 Security Bulletin: Vulnerability in RC4 stream cipher affects Sterling Secure Proxy (CVE-2015-2808) 20 April 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Sterling Secure Proxy Publisher: IBM Operating System: AIX 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=swg21882993 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerability in RC4 stream cipher affects Sterling Secure Proxy (CVE-2015-2808) Security Bulletin Document information More support for: Sterling Secure Proxy Software version: 3.3.1, 3.4, 3.4.1, 3.4.2 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Reference #: 1882993 Modified date: 2015-04-17 Summary The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM Sterling Secure Proxy. 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 Sterling Secure Proxy 126.96.36.199 through 188.8.131.52 iFix 1 Sterling Secure Proxy 184.108.40.206 through 220.127.116.11 iFix 6 Sterling Secure Proxy 18.104.22.168 through 22.214.171.124 iFix 6 Sterling Secure Proxy 126.96.36.199 through 188.8.131.52 iFix06 Remediation/Fixes None Workarounds and Mitigations To disable the RC4 ciphers in Sterling Secure Proxy, do the following: Bring up each Connect:Direct, FTP and HTTP netmap in the GUI configurator. - - Edit each node in the netmap (inbound and outbound). Navigate to the Security tab. Remove any ciphers which contain RC4 in the name. Click OK and go to the next node - - When all the nodes in the netmap are complete, click Save 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 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. - --------------------------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: email@example.com 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 iQIVAwUBVTRzBRLndAQH1ShLAQKzMw//QaIhooBJlGhHWoTxQbSf1xz0kUBW0J0v khu4SAaXfusIJiEz3x0uuZiKJ87DHVovdL+olW09y2XFbx4lGKDzi2URILO9L6al LjWQ/TVuJI1D/TVfwPz57Bn5FIz8tHKsvMQFwjECzFsgC9DMN9hqghZdnqUh3Zbg BdNM7Jt71VYOt9tmp3zXVNMQJxONsg7lBQIl1SKRYwgtD7vdNBMmM+rgTZqzNz3A GkxW70pNnS6aQ5cEShuJFFzF5YJHkOA9Y9487hXiH6ha0li1R4EhXEn+0RmHcF/3 g1+4/01LZaDuV+kmRYbwY1sRivqWkm7/Vw1XhisVBaJtKHiwXj86Sx/TdbPLLgmz gMraFFqygZajwit68b4udAzpRZDnEOec5ipdmx4kfJ8qweZJ7UsbXLnz2v0em6jd fdaQ/yS/ibNheCXDvhrYsnWrS8ykURd0vCHcEOeXgVLEVNWqlH/J4+ndAszKImVc j2ulwVA8iTvwpm+XTGPuXjv6nB5Yn1nqQUcXjdb2NIR1Tt6ZIHcBHd7xSbcqCTjm CmK6YyqtfxH1nLLe/S0t36fVqVua53tc9r9GFZasR9cMmL/7gWuTRohaoKeM27ec fd3D+l7xtZSg3X8tXklo56okqQuJFdqYAAmOfTu2NvAs/9u5Cg4cf7xW62Pr/mNK QgKanjjTOm4= =w/ti -----END PGP SIGNATURE-----