===================================================================== CERT-Renater Note d'Information No. 2006/VULN051 _____________________________________________________________________ DATE : 02/02/2006 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Solaris 10. ====================================================================== Sun(sm) Alert Notification * Sun Alert ID: 102149 * Synopsis: Security Vulnerability in x64 Kernel Processing may Cause a System Panic * Category: Security * Product: Solaris 10 Operating System * BugIDs: 6247143 * Avoidance: Patch, Workaround * State: Resolved * Date Released: 31-Jan-2006 * Date Closed: 31-Jan-2006 * Date Modified: 1. Impact A security vulnerability in Solaris 10 x64 kernel processing may allow a local unprivileged user the ability to cause a system panic, creating a Denial of Service (DoS) condition. 2. Contributing Factors This issue can occur in the following release: x86 Platform * Solaris 10 without patch 118844-14 Note: This issue only affects x64 platforms when running in 64-bit mode. SPARC and 32-bit x86 platforms are not affected. Solaris 8 and Solaris 9 do not have support for the x64 architecture and thus are not affected by this issue. To determine if a system is running in 64-bit mode, the following command can be run: $ isainfo -b 64 If "64" is returned, the system is running in 64-bit mode. 3. Symptoms If the described issue occurs, the system will panic and a message similar to the following will be seen on the console: panic[cpu3]/thread=ffffffff8e6ab880: bad_set_user_regs: rp=fffffe8008708f10 rp->r_cs=0; 4. Relief/Workaround To workaround the described issue, boot the system in 32-bit mode. To specify the 32-bit kernel, as root or with equivalent privileges, enter the following command: # eeprom boot-file=kernel/unix Upon the next reboot, the system will be running the 32-bit kernel. Once the patch for this issue is installed, to reinstate 64 bit mode, as root or with equivalent privileges, enter the following command: # eeprom boot-file=kernel/amd64/unix Upon the next reboot, the system will be running the 64-bit kernel. 5. Resolution This issue is addressed in the following release: x86 Platform * Solaris 10 with patch 118844-14 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 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================