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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.0108 -- [Solaris] Security Vulnerability in samba(7) Specially Crafted Packet May Allow Execution of Arbitrary Code With Root Privileges 30 January 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba(7) Publisher: Sun Microsystems Operating System: Solaris Impact: Root Compromise Access: Remote/Unauthenticated CVE Names: CVE-2008-1105 Ref: AL-2008.0064 Original Bulletin: http://sunsolve.sun.com/search/document.do?assetkey=1-66-249086-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Solution Type Sun Alert Solution 249086 : Security Vulnerability in samba(7) Specially Crafted Packet May Allow Execution of Arbitrary Code With Root Privileges Bug ID 6707977 Product Solaris 9 Operating System Solaris 10 Operating System Date of Resolved Release 12-Jan-2009 SA Document Body Security Vulnerability in samba(7) Specially Crafted Packet May Allow Execution of Arbitrary Code With Root Privileges 1. Impact A heap-based buffer overflow in the Samba client (SMBCLIENT(1)) may allow a remote unprivileged user to execute arbitrary code using a crafted SMB response. Since the Samba daemon (smbd(1M)) can also act as the client during operations such as printer notification and domain authentication, this issue affects both the Samba client and server. Additional information on this issue can be found in the following document: CVE-2008-1105 at http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1105 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 9 without patch 114684-12 * Solaris 10 without patch 119757-13 x86 Platform * Solaris 9 without patch 114685-12 * Solaris 10 without patch 119758-13 with the following versions of Samba software: * Samba 3.0.0 through 3.0.29 Notes: 1. Solaris 8 does not include the Samba software and therefore is not affected by this issue. To determine the version of Samba installed on a system, the following command can be run: % /usr/sfw/sbin/smbd -V Version 3.0.4 To determine if a system is configured as a Samba server, the following command can be run to check for processes related to Samba: % ps -ef | grep mbd root 317 1 0 May 26 ? 0:01 /usr/sfw/sbin/smbd -D root 325 317 0 May 26 ? 0:00 /usr/sfw/sbin/smbd -D root 314 1 0 May 26 ? 0:27 /usr/sfw/sbin/nmbd -D root 28369 17382 0 23:17:46 pts/2 0:00 grep mbd If the output shows "smbd" or "nmbd" running as a daemon (with the -D parameter), the system is configured as a Samba server. 3. Symptoms There are no predictable symptoms that would indicate the described vulnerability has been exploited to run arbitrary code with the privileges of the root user. 4. Workaround To work around the described issue for the Samba server, the Samba service may be stopped by using the following command: On Solaris 9 # /etc/init.d/samba stop On Solaris 10 # svcadm disable samba 5. Resolution SPARC Platform * Solaris 9 with patch 114684-12 or later * Solaris 10 with patch 119757-13 or later x86 Platform * Solaris 9 with patch 114685-12 or later * Solaris 10 with patch 119758-13 or later For more information on Security Sun Alerts, see Technical Instruction ID 213557. 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 2000-2008 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 iQCVAwUBSYJbaCh9+71yA2DNAQJ/6gQAhVJPfhlzqeTEC44NiX+y7Rjdbeyj7w0r 9Gis4K7ZPOEFz4dgLK/F9gTy0iWdK8VQWtmA1tCOTLmXGocrngFL5eU2bUFngyjX bcmwSEOiD+LSImfXpUGq23osSGtTWg0PgFCMHlr/pi/sMVIOLWutl0Tu3LQ+NKTg OIvxVbwcsiQ= =kt1c -----END PGP SIGNATURE-----