Vulnerability Note VU#890128

Lotus Domino vulnerable to a denial of service via DOS device request

Original Release date: 12 Jul 2001 | Last revised: 12 Jul 2001


The Lotus Domino Web Server contains a flaw that could be exploited to cause a denial-of-service situation on the Windows and OS/2 Platforms.


With the Lotus Domino Web Server, you can access DOS-devices. If this is done through the cgi-bin directory, a ncgihttp.exe process will be opened to handle the execution of the request. A flaw exists where this processing will not finish. After numerous requests have been made, the server will no longer respond to requests on tcp port 80.


A denial of service results on Windows and OS/2 platforms.


Upgrade to Notes/Domino 5.0.7 or later. See

If possible, disable access to DOS-Devices through the web server's cgi-bin directory. An application layer filter may be able to detect and block such requests.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
LotusAffected16 Oct 200012 Jul 2001
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Our thanks to Defcom Labs, who published an advisory on this and other problems, available at

This document was written by Jason Rafail and is based on information obtained from a Defcom Labs Advisory.

Other Information

  • CVE IDs: Unknown
  • Date Public: 11 Apr 2001
  • Date First Published: 12 Jul 2001
  • Date Last Updated: 12 Jul 2001
  • Severity Metric: 5.07
  • Document Revision: 18


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