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ESB-2007.0564 -- [Solaris] -- Security Vulnerability in Solaris 10 BIND: Susceptible to Cache Poisoning Attack

Date: 06 September 2007
References: AL-2007.0089  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                        ESB-2007.0564 -- [Solaris]
         Security Vulnerability in Solaris 10 BIND: Susceptible to
                          Cache Poisoning Attack
                             6 September 2007

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

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

Product:              BIND named(1M)
Publisher:            Sun Microsystems
Operating System:     Solaris 10
Impact:               Reduced Security
                      Provide Misleading Information
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-2926

Ref:                  AL-2007.0089

Original Bulletin:  
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103018-1

Revision History:     September 6 2007: Updated resolution information
                      August 27 2007: Final patches released for Solaris 10
                      August 10 2007: Preliminary patches released for Solaris 10
                      July 27 2007: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

Sun(sm) Alert Notification
     * Sun Alert ID: 103018
     * Synopsis: Security Vulnerability in Solaris 10 BIND: Susceptible
       to Cache Poisoning Attack
     * Category: Security
     * Product: Solaris 10 Operating System
     * BugIDs: 6582717
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 25-Jul-2007, 22-Aug-2007
     * Date Closed: 22-Aug-2007
     * Date Modified: 08-Aug-2007, 22-Aug-2007, 04-Sep-2007

1. Impact

   Remote unprivileged users may cause named(1M) to ultimately return
   incorrect addresses for Internet hosts thereby redirecting end users
   to unintended hosts and or services.

   This issue is also referenced in the following documents:
     * CVE-2007-2926 (CERT-US VU#553201) at:
       http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2926
     * Internet Systems Consortium Security bulletin at:
       http://www.isc.org/sw/bind/bind-security.php

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 10 without patch 119783-05

   x86 Platform
     * Solaris 10 without patch 119784-05

   Note: Solaris 8 and Solaris 9 are not impacted by this issue.

   Only systems with the BIND named(1M) service enabled are impacted by
   this issue. To verify if the DNS service instance is enabled under
   smf(5), use the svcs(1) command as follows:
    $ svcs -l svc:/network/dns/server:default | grep enabled
    enabled      true


3. Symptoms

   There are no reliable symptoms that would indicate the described issue
   has occurred. 

4. Relief/Workaround

   There is no workaround.  Please see the Resolution section below.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 10 with patch 119783-05 or later

   x86 Platform
     * Solaris 10 with patch 119784-05 or later

   Note: The resolution provides BIND 9.3.4-P1 as provided by the
   custodians of BIND; the Internet Systems Consortium (ISC).

   After the patch has been installed, it is recommended that BIND
   administrators familiarize themselves with
   the "/usr/share/doc/bind/migration.txt" document.

   Further information on BIND 9.3 is available in the BIND 9.3 Advanced
   Reference Manual (ARM) available on the ISC web site at:
     * http://www.isc.org/sw/bind/arm93/index.php

Change History

   08-Aug-2007:
     * Updated Relif/Workaround section

   22-Aug-2007:
     * State: Resolved
     * Updated Contributing Factors, Relief/Workaround, and Resolution
       sections.

   04-Sep-2007:
     * Updated Resolution section

   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--------------------

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This security bulletin is provided as a service to AusCERT's members.  As
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from the author's website to ensure that the information is still current.

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        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.
===========================================================================

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