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                                    CERT-Renater

                         Note d'Information No. 2008/VULN249
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DATE                      : 25/06/2008

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris 8, Solaris 9, Solaris 10 running
                                                      rpc.ypupdated.

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

    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
      * Solaris 9
      * Solaris 10
      * OpenSolaris based upon builds snv_01 through snv_89

    x86 Platform:
      * Solaris 8
      * Solaris 9
      * Solaris 10
      * 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).
    Interim Security Relief (ISR) is available from
    http://sunsolve.sun.com/tpatches for the following releases:
    SPARC Platform:
      * Solaris 10 IDR138342-01

    x86 Platform
      * Solaris 10 IDR138465-01

    Note: This document refers to one or more Interim Security Relief
    (ISRs) which are designed to address the concerns identified herein.
    Sun has limited experience with these (ISRs) due to their interim
    nature. As such, you should only install the ISRs on systems meeting
    the configurations described  above. Sun may release full patches at
    a later date, however, Sun is under no obligation whatsoever to
    create, release, or distribute any such patch.


    5. Resolution
    This issue is addressed in the following releases:
    SPARC Platform
      * OpenSolaris based upon build snv_90 or later

    x86 Platform
      * OpenSolaris based upon build snv_90 or later

    A final resolution is pending completion.

    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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