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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3723 Potential Privilege escalation vulnerability in WebSphere Application Server 30 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere Application Server Publisher: IBM Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-1840 Original Bulletin: https://www.ibm.com/support/docview.wss?uid=ibm10735767 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Potential Privilege escalation vulnerability in WebSphere Application Server (CVE-2018-1840) Security Bulletin Document information More support for: WebSphere Application Server Software version: 8.5, 9.0 Operating system(s): Platform Independent Software edition: Advanced, Base, Developer, Enterprise, Express, Network Deployment, Single Server Reference #: 0735767 Modified date: 29 November 2018 Summary There is a potential privilege elevation vulnerability in WebSphere Application Server after migration from WebSphere Application Server Version 8 when a security domain is configured to use a federated repository other than global federated repository. Vulnerability Details CVEID: CVE-2018-1840 DESCRIPTION: IBM WebSphere Application Server could allow a remote attacker to gain elevated privileges on the system, caused when a security domain is configured to use a federated repository other than global federated repository and then migrated to a newer release of WebSphere Application Server. CVSS Base Score: 6 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 150813 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L) 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 Remediation/Fixes The recommended solution is to apply the interim fix, Fix Pack containing the APARs for each named product as soon as practical. For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition: If you have migrated from Version 8 and you have a security domain that is configured to use a federated repository other than global federated repository. You should check the settings for your security domain and manually correct the configuration setting, or delete the migrated profile and repeat the migration process after applying the interim fix or Fix pack containing PH01746. For V9.0.0.0 through 9.0.0.9: . Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH01746 - --OR-- . Apply Fix Pack 9.0.0.10 or later (targeted availability 4Q2018). For V8.5.0.0 through 8.5.5.14: . Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH01746 - --OR-- . Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q2019). 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. Reference Complete CVSS v3 Guide On-line Calculator v3 Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 29 November 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. 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. 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: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBXACRAGaOgq3Tt24GAQhIHg//SXRqUPOulAXYbPsqB9joS2d26VQA/0tn guk0JEz7x8Gv3vCSRafubEd8/IRFcU/4f43T80+Tb99MkoCP4g3NzBadGp6iEyNJ /7OjmqDXfxocn+8xE04PgJktQT/K+MWs0/nqiDoqsF2S1CPO3zTjt0EZDk5jiw6C iI4olTjhmf79Np475qAECZHqtDd93Mgv9gsQSTRRTZNaKgAQYPfDFMfbnIplaEt5 lHsY99gNAhBQzwU9zFlRj9UQVuyrMVqV+MOg9R/K0vUd8LiKF4I/FaZHnUF7itpP Z9nolqiRMBlAKMXnBOogIgOL9g+HTM2Z3+D3Wi2fkD5g7L3G2C8Gset3e6QzzJR9 uE4oc+eb4MPa1aWErG3ebngBO7mpzt01xoME+Sv2KOyF78lIsmC8315nJ22RoDxf Ong0d8eYvvYG8CzKs+mBkaNIHHCaqecH4cklhzZ63hoD1HjlsRl++AsGOBtDExNQ 0gE1jituGMoi/IiLO5hxvHEym6/c+gvFFnfm/y5jVcDsBCWSlY99RV8o3IevEFIl qmu85QIOtjaQUCbM86F103NEA8+9snq2OpvLIkiQkAs8D6UwPlprmjcO1byzFqP4 NaRJrfyKgCtjKJpwM4MkrpfW2zQpyJ1nex7kggsuIwXYORcv2G2hheFRlBkguH5D HH1Yfsz0ICY= =OQpW -----END PGP SIGNATURE-----