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.

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].

Impact

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

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Solution

Apply a patch from the vendor

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

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Vendor Information

417052

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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 MS04-012 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%23417052 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.microsoft.com/technet/security/bulletin/ms04-012.mspx&gt;
• <http://www.eeye.com/html/Research/Advisories/AD20040413A.html&gt;

Acknowledgements

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

This document was written by Jason A Rafail.

Other Information

CVE IDs:	CVE-2004-0116
Severity Metric:	3.80 Date Public: