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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0661 -- Sun Alert Notification 57657 Security Vulnerability When Using LDAP In Conjunction With RBAC 20 October 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: LDAP with Role Based Access Control Publisher: Sun Microsystems Operating System: Solaris 9 Solaris 8 Impact: Root Compromise Access: Existing Account - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 57657 * Synopsis: Security Vulnerability When Using LDAP In Conjunction With RBAC * Category: Security * Product: Solaris * BugIDs: 4966423 * Avoidance: Patch, Workaround * State: Resolved * Date Released: 18-Oct-2004 * Date Closed: 18-Oct-2004 * Date Modified: 1. Impact On systems where Lightweight Directory Access Protocol (LDAP, see ldap(1)) is used in conjunction with Role Based Access Control (RBAC, see rbac(5)), unprivileged local users may have the ability to execute certain commands with "superuser" (root) privileges. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch [2]108993-38 * Solaris 9 without patch [3]112960-17 x86 Platform * Solaris 8 without patch [4]108994-38 * Solaris 9 without patch [5]114328-04 Notes: 1. Systems are only impacted when using LDAP in conjunction with RBAC . 2. Solaris 7 is not affected by this issue. This configuration can be determined by the RBAC related entries in the "/etc/nsswitch.conf" file, which will contain lines with one or more of the following type of entries: auth_attr: ldap files prof_attr: ldap files user_attr: ldap files 3. Symptoms There are no predictable symptoms that would indicate the described issue has been exploited. Solution Summary [6]Top 4. Relief/Workaround To work around the described issue, configure the system to use "local" files instead of LDAP for RBAC configuration. RBAC related entries in the "/etc/nsswitch.conf" file should be modified as follows: auth_attr: files prof_attr: files user_attr: files Note: With this workaround, LDAP functionality will be disabled for the RBAC database and all RBAC related data will be queried from "local" files instead of through LDAP. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 8 with patch [7]108993-38 or later * Solaris 9 with patch [8]112960-17 or later x86 Platform * Solaris 8 with patch [9]108994-38 or later * Solaris 9 with patch [10]114328-04 or later This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. References 1. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57657-1#top 2. http://sunsolve.sun.com/search/document.do?assetkey=1-21-108993-38-1 3. http://sunsolve.sun.com/search/document.do?assetkey=1-21-112960-17-1 4. http://sunsolve.sun.com/search/document.do?assetkey=1-21-108994-38-1 5. http://sunsolve.sun.com/search/document.do?assetkey=1-21-114328-04-1 6. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57657-1#top 7. http://sunsolve.sun.com/search/document.do?assetkey=1-21-108993-38-1 8. http://sunsolve.sun.com/search/document.do?assetkey=1-21-112960-17-1 9. http://sunsolve.sun.com/search/document.do?assetkey=1-21-108994-38-1 10. http://sunsolve.sun.com/search/document.do?assetkey=1-21-114328-04-1 - --------------------------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 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== 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 iQCVAwUBQXXC1yh9+71yA2DNAQI6ygP8CFaf+zqHu09cCu0Id1p3r5sMSm0wH/s6 B6rQZ1tFJrZkWHWb0dinVx/qnS2EMBppclr2RPvgm79MVv92BP0zc9avW+PG7dJt lsskJHX686UOL2s34k45VrPot/QsUJKD4MzyoYcVzFWbdHrpiZtnBzt7/aTO8VpX kMxBEW3tLQc= =AyOm -----END PGP SIGNATURE-----