Vulnerability Note VU#581603

Microsoft Services for UNIX Network File System (NFS) server is vulnerable to denial of service via memory leak

Overview

The NFS server included in the Microsoft Services for Unix package contains a denial-of-service vulnerability that may cause the system to become unstable or crash.

I. Description

The Network File System (NFS) server included in the Microsoft Services for Unix (SFU) package contains a memory leak that can lead to excessive resource consumption on affected systems.

This vulnerability affects Microsoft Windows NT 4.0 and Windows 2000 systems that have the SFU package installed.

II. Impact

By sending repeated requests to an affected Microsoft NFS server, attackers can consume all available memory resources, resulting in a denial-of-service condition.

III. Solution

Microsoft has released the following patches to address this vulnerability

http://www.microsoft.com/Downloads/Release.asp?ReleaseID=31600

http://www.microsoft.com/Downloads/Release.asp?ReleaseID=31592

Systems Affected

Vendor	Status	Date Notified	Date Updated
Microsoft	Vulnerable	7-Aug-2001

References

http://www.kb.cert.org/vuls/id/994851
http://www.microsoft.com/technet/security/bulletin/MS01-039.asp
http://www.securityfocus.com/bid/3089

Credit

This vulnerability was reported to Microsoft by Peter Grundl.

This document was written by Jeffrey P. Lanza and is based on information provided by Microsoft.

Other Information

Date Public:	2001-07-24
Date First Published:	2001-07-24
Date Last Updated:	2001-09-04
CERT Advisory:
CVE-ID(s):	CAN-2001-0505
NVD-ID(s):	CAN-2001-0505
US-CERT Technical Alerts:
Metric:	4.72
Document Revision:	8

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