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Multiple Flaws in Fate Research Labs RealSecure Product Analysis November 6,
2000

Internet Security Systems, Inc. Response to "RealSecure Advisory - Fate
Research Labs (11-01-00)"

Synopsis:

Fate Research Labs released a recent product analysis posted to the BugTraq
mailing list describing three perceived issues in the RealSecure product.
ISS believes that all of these issues were reported in error.

Description:

The message incorrectly states that ISS RealSecure does not support
user-defined signatures.  ISS RealSecure has supported user-defined
signatures since version 3.1, released in June 1999.  ISS X-Force has
released numerous security advisories and alerts that contain user-defined
signatures.

Their analysis incorrectly claims that ISS RealSecure does not detect the
very common IIS/RDS security vulnerability discovered by "Rain Forest
Puppy". ISS X-Force released a security alert with a description of this
vulnerability
and a user-defined signature for detection of this vulnerability on August
9, 1999.

On a related note, the message incorrectly claims that ISS RealSecure does
not contain detection support for the much-publicized IIS Unicode
vulnerability affecting IIS versions 4 and 5.  ISS X-Force released a
security alert describing this vulnerability on October 26, 2000.  This
X-Force alert also contains a user-defined signature to detect this
vulnerability.

The last portion of the message states that it is possible to detect the
RealSecure engine by looking for a listening TCP port 2998.  The TCP port
used for RealSecure console communications is user definable to any TCP
port. In addition, ISS recommends that all RealSecure customers configure
RealSecure consoles in "stealth mode," which prevents RealSecure detection.

Internet Security Systems has released new detection capabilities in X-Press
Updates for the ISS SAFEsuite family of products for over a year. 

Recommendations:

ISS X-Force recommends that all RealSecure customers configure the
user-defined signatures as described in the advisories below.

ISS X-Force was not contacted by Fate Research Labs to review their product
analysis prior to posting to BugTraq. Please report all ISS security-related
issues to [EMAIL PROTECTED]

References:

User-defined signature for RDS hole, August 9, 1999: 
http://xforce.iss.net/alerts/advise32.php

User-defined signature for Unicode hole, October 26, 2000:
http://xforce.iss.net/alerts/advise68.php

---------
Copyright (c) 2000 by Internet Security Systems, Inc.

Permission is hereby granted for the redistribution of this Alert
electronically. It is not to be edited in any way without express
consent of the X-Force. If you wish to reprint the whole or any part of this
Alert in any other medium excluding electronic medium, please e-mail
[EMAIL PROTECTED] for permission.

Disclaimer

The information within this paper may change without notice. Use of this
information constitutes acceptance for use in an AS IS condition. There are
NO warranties with regard to this information. In no event shall the author
be liable for any damages whatsoever arising out of or in connection with
the use or spread of this information. Any use of this information is at the
user's own risk.

X-Force PGP Key available at: http://xforce.iss.net/sensitive.php as well as
on MIT's PGP key server and PGP.com's key server.


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