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             AUSCERT External Security Bulletin Redistribution

                        ESB-2008.0581 -- [Solaris]
       rpc.ypupdated(1M) may allow execution of Arbitrary Code when
                           run in Insecure Mode
                              5 December 2008

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

Product:              rpc.ypupdated
Publisher:            Sun Microsystems
Operating System:     Solaris
Impact:               Root Compromise
Access:               Remote/Unauthenticated

Original Bulletin:  
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-238365-1

Revision History:     December 5 2008: Patches released
                      June 25 2008: x86 ISR patch released
                      June  4 2008: Initial Release

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   Solution Type: Sun Alert
   Solution  238365 :   A Security Vulnerability in rpc.ypupdated(1M) May
   Allow Execution of Arbitrary Code When Run in Insecure Mode          
   Bug ID: 6679204

   Product
   Solaris 8 Operating System, Solaris 9 Operating System, Solaris 10
   Operating System

   Date of Workaround Release: 02-Jun-2008

   Date of Resolved Release: 03-Dec-2008

   SA Document Body
   A Security Vulnerability in rpc.ypupdated(1M) May Allow Execution of
   Arbitrary Code When Run in Insecure Mode

   1. Impact
   A security vulnerability in the rpc.ypupdated(1M) daemon, when
   configured to run in the insecure mode via the "-i" option, may allow
   local or remote unprivileged users to execute arbitrary code with root
   privileges.

   2. Contributing Factors
   This issue can occur in the following releases:
   SPARC Platform:
     * Solaris 8 without patch 138885-01
     * Solaris 9 without patch 138575-01
     * Solaris 10 without patch 139481-01
     * OpenSolaris based upon builds snv_01 through snv_89

   x86 Platform:
     * Solaris 8 without patch 138886-01
     * Solaris 9 without patch 138576-01
     * Solaris 10 without patch 139482-01
     * OpenSolaris based upon builds snv_01 through snv_89

   Note: Only OpenSolaris installations including the affected binary
   listed below are affected by this issue :

   /usr/lib/netsvc/yp/rpc.ypupdated

   Note: OpenSolaris distributions may include additional bug fixes above
   and beyond the base build from which it was derived. The base build
   can be derived as follows:
   $ uname -a
   SunOS  phys-node-1 5.11 snv_86 i86pc i386 i86pc

   3. Symptoms
   There are no predictable symptoms to indicate the described issue has
   been exploited to execute arbitrary code.

   4. Workaround
   To work around the described issue, do not run rpc.ypupdated(1M) using
   the "-i" option (insecure mode).

   5. Resolution
   This issue is addressed in the following releases:
   SPARC Platform
     * Solaris 8 with patch 138885-01 or later
     * Solaris 9 with patch 138575-01 or later
     * Solaris 10 with patch 139481-01 or later
     * OpenSolaris based upon build snv_90 or later

   x86 Platform
     * Solaris 8 with patch 138886-01 or later
     * Solaris 9 with patch 138576-01 or later
     * Solaris 10 with patch 139482-01 or later
     * OpenSolaris based upon build snv_90 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

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