Vulnerability Note VU#212892

Microsoft Windows creates COM object identifiers incorrectly

Original Release date: 13 Apr 2004 | Last revised: 13 Apr 2004


A vulnerability exists in Microsoft's COM object component. Explotiation of this vulnerability may lead to information disclosure and the ability for an attacker to open services on network communication ports.


Microsoft's (COM) object component creates object identifiers in a way that may disclose information about a system. This information may then be used to permit applications to open and communicate over ports that were not previously open. This vulnerability affects the following systems:

  • Windows NT Workstation 4.0
  • Windows NT Server 4.0
  • Windows NT Server 4.0, Terminal Server Edition
  • Windows 2000
  • Windows XP
  • Windows Server 2003


An attacker may be able to have application enable network communication through alternate or unexpected communication ports. This could potentially allow services to communicate on ports that are not filtered or protected by the systems security policy.


Apply a patch from the vendor

Microsoft Security Bulletin MS04-012 contains patch information to resolve this issue.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected-13 Apr 2004
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



The Microsoft Security Bulletin credits Todd Sabin of BindView for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

  • CVE IDs: CAN-2004-0124
  • Date Public: 13 Apr 2004
  • Date First Published: 13 Apr 2004
  • Date Last Updated: 13 Apr 2004
  • Severity Metric: 11.39
  • Document Revision: 4


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