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             AUSCERT External Security Bulletin Redistribution

                        ESB-2009.0034 -- [Solaris]
        Security Vulnerability in samba(7) Specially Crafted Packet
                    May Expose Arbitrary Buffer of Data
                              12 January 2009

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Solaris
                      SAMBA
Publisher:            Sun Microsystems
Operating System:     Solaris
Impact:               Read-only Data Access
                      Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-4314

Ref:                  ESB-2008.1078

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-249087-1

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   Solution Type: Sun Alert
   Solution  249087 :   Security Vulnerability in samba(7) Specially
   Crafted Packet May Expose Arbitrary Buffer of Data          
   Bug ID: 6773861

   Product
   Solaris 9 Operating System
   Solaris 10 Operating System
   SAMBA

   Date of Workaround Release: 08-Jan-2009

   SA Document Body
   Security Vulnerability in samba(7) Specially Crafted Packet May Expose 
   Arbitrary Buffer of Data

   1. Impact
   An information disclosure security vulnerability in Samba (SAMBA(7))
   may allow a remote unprivileged user to read arbitrary memory buffer
   contents and cause a Denial of Service (DoS) via crafted requests.
   Additional information on this issue can be found in the following
   document:

   CVE-2008-4314
   http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4314

   2. Contributing Factors
   SPARC Platform
     * Solaris 9 with patch 114684-12 or later
     * Solaris 10 with patch 119757-13 or later
     * OpenSolaris based upon builds snv_92 through snv_105

   x86 Platform
     * Solaris 9 with patch 114685-12 or later
     * Solaris 10 with patch 119758-13 or later
     * OpenSolaris based upon builds snv_92 through snv_105

   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 is therefore 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 compromise the arbitrary memory
   contents.
   
   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 and later:
   # svcadm disable samba

   5. Resolution
   This issue is addressed in the following releases:
   SPARC Platform
     * OpenSolaris based upon builds snv_106 or later

   x86 Platform
     * OpenSolaris based upon builds snv_106 or later

   A final resolution is pending completion for Solaris 9 and 10.
   
   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

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===========================================================================
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