copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2007.0959 -- [Solaris] -- Race Condition in the Solaris Remote Procedure Calls (RPC) Module May Result in a System Panic

Date: 30 November 2007

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                        ESB-2007.0959 -- [Solaris]
        Race Condition in the Solaris Remote Procedure Calls (RPC)
                    Module May Result in a System Panic
                             30 November 2007

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

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

Product:              Solaris Remote Procedure Calls
Publisher:            Sun Microsystems
Operating System:     Solaris 10 Operating System
                      Solaris 9 Operating System
                      Solaris 8 Operating System
Impact:               Denial of Service
Access:               Existing Account

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103083-1

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

Sun(sm) Alert Notification
     * Sun Alert ID: 103083
     * Synopsis: Race Condition in the Solaris Remote Procedure Calls
       (RPC) Module May Result in a System Panic
     * Category: Security
     * Product: Solaris 9 Operating System, Solaris 10 Operating System,
       Solaris 8 Operating System
     * BugIDs: 4728034
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 28-Nov-2007
     * Date Closed: 28-Nov-2007
     * Date Modified: 

1. Impact

   A race condition security vulnerability in the Solaris Remote
   Procedure Call (RPC) Module may allow a local unprivileged user to
   panic the system, resulting in a Denial of Service (DoS) condition.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform:
     * Solaris 8 without patch 116959-20
     * Solaris 9 without patch 113278-18
     * Solaris 10 without patch 127739-01

   x86 Platform:
     * Solaris 8 without patch 116960-20
     * Solaris 9 without patch 119439-11
     * Solaris 10 without patch 127740-01

   Note: This issue only affects systems which have the 'rpcmod' kernel
   module loaded.

   To determine if the the 'rpcmod' kernel module is loaded, the
   following command can be run:
    $ modinfo -c | grep rpcmod || echo "System not impacted."

3. Symptoms

   Should the described issue occur, the system may panic with a NULL
   pointer dereference and with a message similar to the following:
    panic[cpu0]/thread=2a100717d40: 0x3000619cea0: BAD TRAP: type=31
    rp=2a100716c50 addr=8 mmu_fsr=0 occurred in module "rpcmod" due to
    a NULL pointer dereference. 

4. Relief/Workaround

   For some situations it may be possible to avoid loading rpcmod by not
   running RPC services on the system; however, this will remove RPC
   functionality. If this is not acceptable, please see the Resolution
   section below.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform:
     * Solaris 8 with patch 116959-20 or later
     * Solaris 9 with patch 113278-18 or later
     * Solaris 10 with patch 127739-01 or later

   x86 Platform:
     * Solaris 8 with patch 116960-20 or later
     * Solaris 9 with patch 119439-11 or later
     * Solaris 10 with patch 127740-01 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 2000-2006 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

iQCVAwUBR09Laih9+71yA2DNAQL12wQAj4gjp6BC+ssPj4YXmhpyDv5j2UuxAlR0
WxGT+hwJ5LTaqkqkkFmj/jKD9EDGhJ4ofzE7FlsLuHbG35OTuTVJNmtIIQ/sZqw6
Ar+YghBw5UjJ3ycqSWKz41eSUDvuY7vbpNOxsKCMgHfoyKz5AU/BCqMOtf8ZOSol
rs0ACEdmkGY=
=hsFY
-----END PGP SIGNATURE-----