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Microsoft Windows SSP interface fails to properly validate value used during authentication protocol selection

Vulnerability Note VU#638548

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


A remotely exploitable vulnerability in Microsoft's Negotiate Security Software Provider (SSP) interface could permit an attacker to execute arbitrary code on the system.


Microsoft's Negotiate Security Software Provider (SSP) interface contains a buffer overflow during the processing of data sent for authentication protocol selection. A unathenticated remote attacker could send a malicious request to the SSP service to exploit this vulnerability. The following systems are affected:

    • Windows XP
    • Windows Server 2003
    • Windows 2000
    • Systems running Internet Information Services (IIS)


An unauthenticated remote attacker could cause a denial-of-service situation, or potentially execute arbitrary code on the system with "SYSTEM" privileges.


Apply a patch from the vendor
Microsoft Security Bulletin MS04-011 contains patch information to resolve this issue.

Vendor Information


Microsoft Corporation Affected

Updated:  April 14, 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 MS04-011 contains information regarding this issue.

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

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Thanks to Microsoft for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

CVE IDs: CVE-2004-0119
Severity Metric: 30.12
Date Public: 2004-04-13
Date First Published: 2004-04-14
Date Last Updated: 2004-04-14 15:23 UTC
Document Revision: 4

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