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Microsoft Windows creates COM object identifiers incorrectly

Vulnerability Note VU#212892

Original Release Date: 2004-04-14 | Last Revised: 2004-04-14


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.

Vendor Information


Microsoft Corporation Affected

Updated:  April 13, 2004



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Microsoft Security Bulletin MS04-012 contains information regarding this issue.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

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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: CVE-2004-0124
Severity Metric: 11.39
Date Public: 2004-04-13
Date First Published: 2004-04-14
Date Last Updated: 2004-04-14 00:40 UTC
Document Revision: 4

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