[UNIX] Arbitrary File Corruption Vulnerability in Sun Solaris kcms_configure

From: SecuriTeam (support_at_securiteam.com)
Date: 02/24/05

  • Next message: SecuriTeam: "[NT] Directory Traversal Exploit in SD Server" 
    To: list@securiteam.com
Date: 24 Feb 2005 17:49:17 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
    - - promotion

    The SecuriTeam alerts list - Free, Accurate, Independent.

    Get your security news from a reliable source.
    http://www.securiteam.com/mailinglist.html

    - - - - - - - - -

      Arbitrary File Corruption Vulnerability in Sun Solaris kcms_configure
    ------------------------------------------------------------------------

    SUMMARY

    The kcms_configure utility is "part of the Kodak Color Management System
    (KCMS) package that is included with Solaris. It is installed setuid root
    by default".

    Local exploitation of a race condition in the Kodak Color Management
    System's kcms_configure script packaged with Sun Microsystems Inc.
    Solaris operating system can allow for the corruption of arbitrary files
    on the system.

    DETAILS

    Vulnerable Systems:
     * Sun Solaris version 8, 9 (10 pre-release suspected)

    Local exploitation of a race condition in the Kodak Color Management
    System's kcms_configure script packaged with Sun Microsystems Inc. Solaris
    operating system can allow for the corruption of arbitrary files on the
    system.

    The problem specifically exists due to logging errors within
    kcms_configure, a set user id (setuid) root script. The file KCS_ClogFile
    will be written to if it exists in the current directory. Due to a lack of
    sanity checking a local attacker can redirect log file output to an
    arbitrary file on the system through the usage of symbolic links. By
    specifying an invalid monitor profile argument the attacker can force an
    error log entry to be written.

    Successful exploitation allows local attackers to corrupt arbitrary files
    on the system. Attackers can use this ability to append to important
    system files, possibly resulting in a denial of service or local privilege
    elevation.

    Workaround:
    Remove the setuid bit from kcms_configure:
      # chmod -s /usr/openwin/bin/kcms_configure

    Vendor response:
    This issue is addressed in Sun Alert
    <http://www.sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57706-1> ID #57706.

    CVE Information:
     <http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0481>
    CAN-2004-0481

    Disclosure Timeline:
     * 04/27/2004 - Initial vendor notification.
     * 04/27/2004 - Initial vendor response.
     * 02/23/2005 - Public disclosure.

    ADDITIONAL INFORMATION

    The information has been provided by
    <mailto:idlabs-advisories@idefense.com> iDEFENSE.
    The original article can be found at:
    <http://www.idefense.com/application/poi/display?id=206&type=vulnerabilities> http://www.idefense.com/application/poi/display?id=206&type=vulnerabilities

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

    This bulletin is sent to members of the SecuriTeam mailing list.
    To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
    In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

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

    DISCLAIMER:
    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

  • Next message: SecuriTeam: "[NT] Directory Traversal Exploit in SD Server"

    Relevant Pages