Vulnerability Note VU#155252

Microsoft Windows 2000 SMTP service vulnerable to DoS when processing message with corrupted time stamp

Overview

Some versions of Microsoft Windows 2000 feature an SMTP service for handling Internet email. A flaw in this SMTP service may result in a denial-of-service vulnerability.

I. Description

When a message with a corrupted time stamp is received by a vulnerable system, the SMTP service may stop responding or shut down unexpectedly. This issue may occur when the FILETIME attribute of the message is not valid.

According to Microsoft, this issue affects systems running Microsoft Windows 2000 Server with Service Pack 2 or Service Pack 3 installed and systems running Microsoft Exchange 2000 Server.

II. Impact

The SMTP service may stop responding or shut down unexpectedly, resulting in a denial of service.

III. Solution

Microsoft has included a patch for this issue in Windows 2000 Service Pack 4. For additional information, users are encouraged to review the following Microsoft Knowledge Base Articles:

330716

260910

Systems Affected

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Vulnerable	14-Jul-2003

References

http://support.microsoft.com/?kbid=327194
http://support.microsoft.com/default.aspx?kbid=330716

Credit

Thanks to Microsoft for reporting this vulnerability.

This document was written by Chad R Dougherty.

Other Information

Date Public:	2003-07-02
Date First Published:	2003-07-15
Date Last Updated:	2003-07-15
CERT Advisory:
CVE-ID(s):
NVD-ID(s):
US-CERT Technical Alerts:
Metric:	9.36
Document Revision:	6

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