From: agent99 at sgi.com (SGI Security Coordinator)
Subject: Emulex FibreChannel Hub Vulnerable to SNMP DoS Attack

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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
from your use of, failure to use or improper use of any of the instructions
or information in this Security Advisory.
______________________________________________________________________________

- -----------------------
- --- 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.


- -------------
- --- Links ---
- -------------

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______________________________________________________________________________
      This information is provided freely to all interested parties
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