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UNIRAS Brief - 422/03 - SGI - Emulex FibreChannel Hub Vulnerable to SNMP DoS Attack



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 422/03 dated 28.07.03  Time: 10:50
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

SGI Security Advisory:

Emulex FibreChannel Hub Vulnerable to SNMP DoS Attack

Detail
====== 

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

SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/advisories/

SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/patches/

SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:
http://freeware.sgi.com/

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com

SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:
http://support.sgi.com/

IRIX 6.5 Software Update CDs can be obtained from:
http://support.sgi.com/

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com.  Security advisories and patches are located under the URL
ftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com security FTP repository) lags behind and does not do a
real-time update.


- - -----------------------------------------
- - --- SGI Security Information/Contacts ---
- - -----------------------------------------

If there are questions about this document, email can be sent to
security-info@xxxxxxxx

                      ------oOo------

SGI provides security information and patches for use by the entire SGI
community.  This information is freely available to any person needing the
information and is available via anonymous FTP and the Web.

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com.  Security advisories and patches are located under the URL
ftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:
http://www.sgi.com/support/security/

For issues with the patches on the FTP sites, email can be sent to
security-info@xxxxxxxx

For assistance obtaining or working with security patches, please
contact your SGI support provider.

                      ------oOo------

SGI provides a free security mailing list service called wiretap and
encourages interested parties to self-subscribe to receive (via email) all
SGI Security Advisories when they are released. Subscribing to the mailing
list can be done via the Web
(http://www.sgi.com/support/security/wiretap.html) or by sending email to
SGI as outlined below.

% mail wiretap-request@xxxxxxx
subscribe wiretap <YourEmailAddress such as zedwatch@xxxxxxx >
end
^d

In the example above, <YourEmailAddress> is the email address that you wish
the mailing list information sent to.  The word end must be on a separate
line to indicate the end of the body of the message. The control-d (^d) is
used to indicate to the mail program that you are finished composing the
mail message.


                      ------oOo------

SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .

                      ------oOo------

If there are general security questions on SGI systems, email can be sent to
security-info@xxxxxxxx

For reporting *NEW* SGI security issues, email can be sent to
security-alert@xxxxxxx or contact your SGI support provider.  A support
contract is not required for submitting a security report.

______________________________________________________________________________
      This information is provided freely to all interested parties
      and may be redistributed provided that it is not altered in any
      way, SGI is appropriately credited and the document retains and
      includes its valid PGP signature.

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UNIRAS wishes to acknowledge the contributions of SGI for the information
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
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Neither UNIRAS or NISCC shall also accept responsibility for any errors 
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UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
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members and the community at large. 
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<End of UNIRAS Briefing>
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