Vulnerability Note VU#279323

Microsoft SQL Server contains buffer overflows in several Database Consistency Checkers

Overview

Microsoft SQL Server ships with several administrative tools that allow database users to elevate their administrative privileges from a single database to all databases on the server.

I. Description

Microsoft SQL Server ships with several utilities known as Database Consistency Checkers (DBCCs). According to Microsoft Security Bulletin MS02-038, "DBCCs are command console utilities that allow maintenance and other operations to be performed on a SQL server." An unspecified subset of the DBCC utilities contain buffer overflows that allow users who have db_owner or db_ddladmin privileges on a single database to elevate their administrative privileges to the entire SQL server.

II. Impact

This vulnerability allows remote attackers to execute arbitrary code with the privileges of the SQL service account. If the privileges of the service account are elevated via VU#796313, this vulnerability may result in compromise of the server host.

III. Solution

Apply a patch

Microsoft has published Security Bulletin MS02-038 to address this vulnerability. For more information, please see

http://www.microsoft.com/technet/security/bulletin/ms02-038.asp

This vulnerability also affects any products that include the Microsoft Desktop Engine (MSDE) 2000. For more information, please see

http://www.microsoft.com/technet/security/MSDEapps.asp

Systems Affected

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Vulnerable	25-Jul-2002

References

http://www.microsoft.com/technet/security/bulletin/ms02-038.asp
http://support.microsoft.com/support/misc/kblookup.asp?id=Q316333
http://www.microsoft.com/technet/prodtechnol/sql/maintain/security/sql2ksec.asp
http://online.securityfocus.com/bid/5307

Credit

This vulnerability was reported to Microsoft by Cesar Cerrudo.

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

Other Information

Date Public:	2002-07-24
Date First Published:	2002-07-25
Date Last Updated:	2003-02-06
CERT Advisory:
CVE-ID(s):	CAN-2001-0644
NVD-ID(s):	CAN-2001-0644
US-CERT Technical Alerts:
Metric:	8.86
Document Revision:	15

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