[Full-Disclosure] Emulex FibreChannel Hub Vulnerable to SNMP DoS Attack

From: SGI Security Coordinator (agent99_at_sgi.com)
Date: 07/25/03

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    ______________________________________________________________________________
                               SGI Security Advisory

      Title : Emulex FibreChannel Hub Vulnerable to SNMP DoS Attack
      Number : 20030703-01-I
      Date : July 25, 2003
      Reference : CERT CA-2002-03
      Reference : CVE CAN-2002-0013
      Reference : SGI BUG 882516
      Fixed in : See Workaround
    ______________________________________________________________________________

    SGI provides this information freely to the SGI user community for its
    consideration, interpretation, implementation and use. SGI recommends that
    this information be acted upon as soon as possible.

    SGI provides the information in this Security Advisory on an "AS-IS" basis
    only, and disclaims all warranties with respect thereto, express, implied
    or otherwise, including, without limitation, any warranty of merchantability
    or fitness for a particular purpose. In no event shall SGI be liable for
    any loss of profits, loss of business, loss of data or for any indirect,
    special, exemplary, incidental or consequential damages of any kind arising
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    ______________________________________________________________________________

    - -----------------------
    - --- Issue Specifics ---
    - -----------------------

    It's been reported that the PROTOS smnp test suite can potentially be used
    to disrupt the operations of the Emulex 1Gbit Fibre Channel Hub, resulting
    in a Denial of Service.

    For more information, see:
      http://www.cert.org/advisories/CA-2002-03.html
      http://xforce.iss.net/xforce/xfdb/8115
      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0013

    SGI has investigated the issue and recommends the following steps for
    neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be
    implemented on ALL vulnerable SGI systems.

    - --------------
    - --- Impact ---
    - --------------

    The Emulex FibreChannel hub is an optional product and is not part of the
    IRIX operating system. It is supplied by SGI as a component in certain
    system configurations.

    - ------------------
    - --- Workaround ---
    - ------------------

    SGI recommends the following workaround for this issue:

    Use a router or other network device to block SNMP traffic destined for
    the Emulex hub. Alternately, if you don't need to manage it via IP,
    unplug it from the ethernet altogether. Doing so should not impact
    FibreChannel operations.

    - ----------------
    - --- Solution ---
    - ----------------

    SGI has not provided patches for these vulnerabilities. Our recommendation
    is to follow the workaround instructions.

    - ------------------------
    - --- Acknowledgments ----
    - ------------------------

    SGI wishes to thank U-Oulu and the users of the Internet Community at large
    for their assistance in this matter.

    - -------------
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