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Microsoft Windows ASN.1 library contains a memory management vulnerability

Vulnerability Note VU#255924

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


Microsoft's ASN.1 library contains a memory management error that could be exploited by a remote attacker to cause a denial-of-service situation, or execute arbitrary code.


Microsoft's ASN.1 library contains a memory management error, potentially a "double-free" condition. By sending a crafted request, an attacker may be able to exploit this vulnerability to corrupt memory or execute arbitrary code. This vulnerability affects the following systems:

    • Windows XP
    • Windows Server 2003
    • Windows NT 4.0
    • Windows 2000
    • Windows 98, 98 SE, ME


Exploitation of this vulnerability may lead to a denial-of-service condition, or the ability to execute arbitrary code.


Apply a patch from the vendor

Microsoft Security Bulletin MS04-011 contains patch information to resolve this issue.

Vendor Information

Affected   Unknown   Unaffected

Microsoft Corporation

Updated:  April 14, 2004



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

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


Microsoft Security Bulletin MS04-011 contains information regarding this issue.

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

CVSS Metrics

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



Thanks to Microsoft for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

CVE IDs: CVE-2004-0123
Severity Metric: 48.55
Date Public: 2004-04-13
Date First Published: 2004-04-14
Date Last Updated: 2004-04-14 14:36 UTC
Document Revision: 2

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