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AUSCERT External Security Bulletin Redistribution
ESB-2002.520 -- SGI Security Advisory
IGMP multicast report Denial of Service vulnerability
19 September 2002
AusCERT Security Bulletin Summary
Operating System: IRIX
Impact: Denial of Service
Access Required: Remote
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SGI Security Advisory
Title: IGMP multicast report Denial of Service vulnerability
Date: September 18, 2002
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.
SGI acknowledges the IGMP multicast report DoS vulnerability reported at:
http://www.cs.ucsb.edu/~krishna/igmp_dos/, and is currently investigating.
No further information is available at this time. As further information
becomes available, additional advisories will be issued.
For the protection of all our customers, SGI does not disclose, discuss or
confirm vulnerabilities until a full investigation has occurred and any
necessary patch(es) or release streams are available for all vulnerable and
supported Linux and IRIX operating systems.
Until SGI has more definitive information to provide, customers are
encouraged to assume all security vulnerabilities as exploitable and take
appropriate steps according to local site security policies and
As further information becomes available, additional advisories will be
issued via the normal SGI security information distribution methods
including the wiretap mailing list.
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If there are questions about this document, email can be sent to
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information and is available via anonymous FTP and the Web.
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The SGI Security Headquarters Web page is accessible at the URL
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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
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