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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1835 Security Bulletin: Potential vulnerability in WebSphere Application Server (CVE-2015-0899) 22 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere Application Server Publisher: IBM Operating System: AIX HP-UX IBM i Linux variants Solaris Windows z/OS Impact/Access: Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-0899 Reference: ESB-2018.0036 ESB-2018.0035.2 ESB-2017.1238 ESB-2016.2310 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=swg22015348 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Potential vulnerability in WebSphere Application Server (CVE-2015-0899) Document information More support for: WebSphere Application Server Software version: 7.0, 8.0, 8.5, 9.0 Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS Software edition: Advanced, Base, Developer, Enterprise, Express, Network Deployment, Single Server Reference #: 2015348 Modified date: 21 June 2018 Summary There is a potential vulnerability in WebSphere Application Server. Vulnerability Details CVEID: CVE-2015-0899 DESCRIPTION: Apache Struts could allow a remote attacker to bypass security restrictions, caused by an error in the MultiPageValidator implementation. An attacker could exploit this vulnerability using a modified page parameter to bypass restrictions and launch further attacks on the system. This vulnerability also affects other products. CVSS Base Score: 4.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 101770 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N) Affected Products and Versions This vulnerability affects the following versions and releases of IBM WebSphere Application Server: o Version 9.0 o Version 8.5 o Version 8.0 o Version 7.0 Remediation/Fixes The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APARs for each named product as soon as practical. There are 2 separate interim fixes that may need to be applied, links are provided below: APARs PI95655 for the Administrative Console PI98929 for the LongRunning Scheduler For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition: For V9.0.0.0 through 9.0.0.7: . Upgrade to minimal fix pack levels as required by interim fixes and then apply Interim Fixes PI95655 and PI98929 - --OR-- . Apply Fix Pack 9.0.0.8 or later (targeted availability 22 June 2018). For V8.5.0.0 through 8.5.5.13: . Upgrade to minimal fix pack levels as required by interim fixes and then apply Interim Fixes PI95655 and PI98929 - --OR-- . Apply Fix Pack 8.5.5.14 or later (targeted availability 3Q2018). For V8.0.0.0 through 8.0.0.15: . Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI95655 and PI98929 For V7.0.0.0 through 7.0.0.45: . Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI95655 WebSphere Application Server V7 and V8 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product. Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. Important note IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk. References Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 21 June 2018: original document 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. 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