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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0959 -- [Solaris] Race Condition in the Solaris Remote Procedure Calls (RPC) Module May Result in a System Panic 30 November 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Solaris Remote Procedure Calls Publisher: Sun Microsystems Operating System: Solaris 10 Operating System Solaris 9 Operating System Solaris 8 Operating System Impact: Denial of Service Access: Existing Account Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103083-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 103083 * Synopsis: Race Condition in the Solaris Remote Procedure Calls (RPC) Module May Result in a System Panic * Category: Security * Product: Solaris 9 Operating System, Solaris 10 Operating System, Solaris 8 Operating System * BugIDs: 4728034 * Avoidance: Patch * State: Resolved * Date Released: 28-Nov-2007 * Date Closed: 28-Nov-2007 * Date Modified: 1. Impact A race condition security vulnerability in the Solaris Remote Procedure Call (RPC) Module may allow a local unprivileged user to panic the system, resulting in a Denial of Service (DoS) condition. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform: * Solaris 8 without patch 116959-20 * Solaris 9 without patch 113278-18 * Solaris 10 without patch 127739-01 x86 Platform: * Solaris 8 without patch 116960-20 * Solaris 9 without patch 119439-11 * Solaris 10 without patch 127740-01 Note: This issue only affects systems which have the 'rpcmod' kernel module loaded. To determine if the the 'rpcmod' kernel module is loaded, the following command can be run: $ modinfo -c | grep rpcmod || echo "System not impacted." 3. Symptoms Should the described issue occur, the system may panic with a NULL pointer dereference and with a message similar to the following: panic[cpu0]/thread=2a100717d40: 0x3000619cea0: BAD TRAP: type=31 rp=2a100716c50 addr=8 mmu_fsr=0 occurred in module "rpcmod" due to a NULL pointer dereference. 4. Relief/Workaround For some situations it may be possible to avoid loading rpcmod by not running RPC services on the system; however, this will remove RPC functionality. If this is not acceptable, please see the Resolution section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform: * Solaris 8 with patch 116959-20 or later * Solaris 9 with patch 113278-18 or later * Solaris 10 with patch 127739-01 or later x86 Platform: * Solaris 8 with patch 116960-20 or later * Solaris 9 with patch 119439-11 or later * Solaris 10 with patch 127740-01 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved - --------------------------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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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 iQCVAwUBR09Laih9+71yA2DNAQL12wQAj4gjp6BC+ssPj4YXmhpyDv5j2UuxAlR0 WxGT+hwJ5LTaqkqkkFmj/jKD9EDGhJ4ofzE7FlsLuHbG35OTuTVJNmtIIQ/sZqw6 Ar+YghBw5UjJ3ycqSWKz41eSUDvuY7vbpNOxsKCMgHfoyKz5AU/BCqMOtf8ZOSol rs0ACEdmkGY= =hsFY -----END PGP SIGNATURE-----