Vulnerability Note VU#638548

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.

I. 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)

II. Impact

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

III. Solution

Apply a patch from the vendor

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

Systems Affected

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Vulnerable	14-Apr-2004

References

http://www.microsoft.com/technet/security/bulletin/ms04-011.mspx

Credit

Thanks to Microsoft for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

Date Public:	2004-04-13
Date First Published:	2004-04-14
Date Last Updated:	2004-04-14
CERT Advisory:
CVE-ID(s):	CAN-2004-0119
NVD-ID(s):	CAN-2004-0119
US-CERT Technical Alerts:
Metric:	30.12
Document Revision:	3

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