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

Overview

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

Description

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)  

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Impact

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

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Solution

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

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Vendor Information

638548

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Microsoft Corporation __ Affected

Updated: April 14, 2004

Status

Affected

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.

Addendum

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](<mailto:[email protected]?Subject=VU%23638548 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

<http://www.microsoft.com/technet/security/bulletin/ms04-011.mspx&gt;

Acknowledgements

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: