Vulnerability Note VU#417052

Microsoft RPCSS Service contains memory leak in handling of specially crafted messages

Overview

Microsoft RPCSS Service contains a memory management vulnerability that may permit a remote attacker to cause a denial-of-service situation.

I. Description

The Microsoft RPCSS Service is responsible for managing Remote Procedure Call (RPC) messages and is enabled by default on many versions of Microsoft Windows. When the service receives a request from the DCOM/RPC interface to allocate memory, the size of the memory to be allocated is user-specified. A failure to check the size of the requested allocation and to reclaim discarded memory may lead to a resource exhaustion and cause a denial of service condition. The following systems are affected:

Windows XP
Windows Server 2003
Windows 2000

For more infomation please see Microsoft Security Bulletin MS04-012 and eEye Digital Security Advisory [AD20040413A].

II. Impact

A remote attacker can consume all available memory causing a denial-of-service condition.

III. Solution

Apply a patch from the vendor

Microsoft Security Bulletin MS04-012 contains patch information to resolve this issue.

Systems Affected

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

References

http://www.microsoft.com/technet/security/bulletin/ms04-012.mspx
http://www.eeye.com/html/Research/Advisories/AD20040413A.html

Credit

Thanks to Microsoft and eEye Digital Security for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

Date Public	04/13/2004
Date First Published	04/14/2004 10:52:04 AM
Date Last Updated	04/14/2004
CERT Advisory
CVE-ID(s)	CAN-2004-0116
NVD-ID(s)	CAN-2004-0116
US-CERT Technical Alerts
Metric	3.80
Document Revision	3

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