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Binary file
Iisdos.exe
Source of binary file
Iisdos.zip
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USSR Advisory Code: USSR-2000040
Release Date:
May 11, 2000
Affected Software Versions:
Microsoft Internet Information Server 4.0
Microsoft Internet Information Server 5.0
THE PROBLEM
The Ussr Labs team has recently discovered a memory problem in IIs 4.0 and 5.0.
What happens is by preforming an attack with specially-malformed information extension data in The URL,
it will cause slow the performance of an affected server, or temporarily stop it altogether.
SPECIAL NOTE: That we take no responsibility for this code it is for educational purposes only.
Vendor Status:
Contacted: Saturday, April 15, 2000 7:12 AM
Vendor Url: http://www.microsoft.com
Program Url: http://www.microsoft.com/ntserver/web/exec/feature/Datasheet.asp (IIS 4.0)
Program Url: http://www.microsoft.com/windows2000/guide/server/features/appsvcs.asp (IIS 5.0)
Fix:
Internet Information Server 4.0:
http://www.microsoft.com/Downloads/Release.asp?ReleaseID=20906
Internet Information Server 5.0:
http://www.microsoft.com/Downloads/Release.asp?ReleaseID=20904
More Information:
http://www.microsoft.com/technet/security/bulletin/ms00-030.asp
Microsoft Security Bulletin MS00-021: Frequently Asked Questions,
http://www.microsoft.com/technet/security/bulletin/fq00-030.asp
Microsoft Knowledge Base article Q260205 discusses this issue and will be available soon
Related Links:
Underground Security Systems Research
http://www.ussrback.com
Greetings:
Eeye, Attrition, w00w00, beavuh, Rhino9, SecurityFocus.com, ADM, HNN, Sub, Technotronic and Wiretrip.
Copyright (c) 1999-2000 Underground Security Systems Research.
Permission is hereby granted for the redistribution of this alert electronically. It is not to be
edited in any way without express consent of Ussr. If you wish to reprint the whole or any part of
this alert in any other medium excluding electronic medium, please e-mail labs@ussrback.com 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.
Feedback:
Please send suggestions, updates, and comments to:
Underground Security Systems Research
mail:labs@ussrback.com
http://www.ussrback.com
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