Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0735 -- [Solaris] A Security Vulnerability in the Handling of Thread Contexts in the Solaris Kernel May Allow a Denial of Service (DoS) 28 September 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Sun Microsystems Operating System: Solaris Impact: Denial of Service Access: Existing Account CVE Names: CVE-2007-5132 Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103084-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 103084 * Synopsis: A Security Vulnerability in the Handling of Thread Contexts in the Solaris Kernel May Allow a Denial of Service (DoS) * Category: Security * Product: Solaris 9 Operating System, Solaris 10 Operating System, Solaris 8 Operating System * BugIDs: 6351092 * Avoidance: Patch * State: Resolved * Date Released: 26-Sep-2007 * Date Closed: 26-Sep-2007 * Date Modified: 1. Impact A security vulnerability related to a race condition during the handling of thread contexts in the Solaris kernel may allow a local unprivileged user to panic the system and thereby cause a Denial of Service (DoS) condition. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch 117350-48 * Solaris 9 without patch 122300-10 * Solaris 10 without patch 125100-02 x86 Platform * Solaris 8 without patch 117351-48 * Solaris 9 without patch 122301-10 * Solaris 10 without patch 125101-02 3. Symptoms A number of different types of panic can result, making it difficult to quickly pin-point this issue as the cause. However, as an example, the following command can be run on a crash dump: # echo "*panic_thread::findstack !grep kcpc_free" |mdb unix.0 vmcore.0 and if output similar to the following is produced: 000002a101168a61 kcpc_free+18() it is likely that this issue has occurred. Note: by default, crash dumps are written to "/var/crash/<uname -n>". See dumpadm(1M) for further information. 4. Relief/Workaround There is no workaround for this issue. Please see the Resolution section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform: * Solaris 8 with patch 117350-48 or later * Solaris 9 with patch 122300-10 or later * Solaris 10 with patch 125100-02 or later x86 Platform: * Solaris 8 with patch 117351-48 or later * Solaris 9 with patch 122301-10 or later * Solaris 10 with patch 125101-02 or later Note: There are additional patches which complete the fix for 6351092 but these patches are not required to secure a system against the vulnerability in this Sun Alert. The additional patches are only required to ensure consistency with and correct functioning of the debug facilities on your system. (The Solaris 10 SPARC and x86 kernel patches and the Solaris 9 x86 patch deliver all the files for this change and so these releases are not listed below). These additional patches which are not required to fix the vulnerability are: SPARC Platform * Solaris 8 patches 109896-32, 116975-06, 126125-01, and 126131-01 * Solaris 9 patches 115553-27 and 117127-03 x86 Platform * Solaris 8 patches 116976-04, 126126-01 and 126132-01 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. 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: 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 iQCVAwUBRvxmzSh9+71yA2DNAQLyagQAnHeng7cT9bCtqg3QoMyV5lq+uauUXb6J kfWh4yiPNElG+AHMqWhYKCoQTisnSbQ/nFTTH470XXK/2Dopq1Z+VNvIdpYZm19J R62JY+KkoUi5et5Wfy7fotCCcUjX16UtfD+ajnxZzS6pD/E8NmmysfASv822O2Z7 P9JoDNa3qoY= =aHlf -----END PGP SIGNATURE-----