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                                    CERT-Renater

                         Note d'Information No. 2008/VULN199
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DATE                      : 03/06/2008

HARDWARE PLATFORM(S)      : /

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

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http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-237864-1
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    Solution Type: Sun Alert
    Solution  237864 :   A Security Vulnerability in the Solaris
    crontab(1) utility may allow execution of Arbitrary Code
    Bug ID: 6620661

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

    Date of Resolved Release: 30-May-2008

    SA Document Body
    A Security Vulnerability in the Solaris crontab(1) utility may allow
    execution of Arbitrary Code

    1. Impact
    A race condition security vulnerability in the Solaris crontab(1)
    utility may allow a local unprivileged user to inject arbitrary
    cron(1M) jobs into another local user's crontab file, leading to
    execution of arbitrary code with the privileges of that user.
    Sun acknowledges with thanks, Charles Morris of Old Dominion
    University for discovering and reporting this issue.
    2. Contributing Factors
    This issue can occur in the following releases:
    SPARC Platform
      * Solaris 8 without patch 109007-26
      * Solaris 9 without patch 122300-27
      * Solaris 10 without patch 137017-02
      * OpenSolaris based upon builds snv_01 through snv_92

    x86 Platform
      * Solaris 8 without patch 109008-26
      * Solaris 9 without patch 122301-27
      * Solaris 10 without patch 137018-02
      * OpenSolaris based upon builds snv_01 through snv_92

    Only OpenSolaris installations including the following affected
    binaries are impacted by this issue:

    /usr/bin/crontab
    /usr/xpg4/bin/crontab
    /usr/xpg6/bin/crontab

    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 that would indicate the described
    issue has been exploited to execute arbitrary code.
    4. Workaround
    There is no workaround for this issue. Please see the Resolution
    section below.
    5. Resolution
    SPARC Platform
      * Solaris 8 with patch 109007-26 or later
      * Solaris 9 with patch 122300-27 or later
      * Solaris 10 with patch 137017-02 or later
      * OpenSolaris based upon builds snv_93 or later

    x86 Platform
      * Solaris 8 with patch 109008-26 or later
      * Solaris 9 with patch 122301-27 or later
      * Solaris 10 with patch 137018-02 or later
      * OpenSolaris based upon builds snv_93 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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