Vulnerability Note VU#619707

Overview

Microsoft SQL Server contains several buffer overflows in "functions that are associated with connecting to remote data sources through 'ad hoc names.'"

Description

Microsoft SQL Server versions 7.0 and 2000 contain buffer overflows in the openrowset and opendatasource macros. By calling these macros with an overly long provider name parameter, an intruder can interrupt the ordinary operation of the server or potentially execute arbitrary code with the privileges of the SQL server. For more information, see http://www.microsoft.com/technet/security/bulletin/MS02-007.asp In order to exploit this vulnerability, an intruder would need to be able to call one of the vulnerable macros directly, or be able to supply an inappropriate argument to a script that uses one of the vulnerable macros.

Impact

An intruder can 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.

Solution

Apply a patch as described in http://support.microsoft.com/support/misc/kblookup.asp?id=Q318268 or http://support.microsoft.com/support/misc/kblookup.asp?id=Q316333.

Systems Affected (Learn More)

Vendor	Status	Date Notified	Date Updated
Microsoft Corporation	Affected	27 Jul 2002	29 Jul 2002

If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group	Score	Vector
Base	N/A	N/A
Temporal	N/A	N/A
Environmental	N/A	N/A

References

• http://www.microsoft.com/technet/security/bulletin/MS02-007.asp
• http://support.microsoft.com/support/misc/kblookup.asp?id=Q318268
• http://support.microsoft.com/support/misc/kblookup.asp?id=Q316333
• http://www.microsoft.com/technet/prodtechnol/sql/maintain/security/sql2ksec.asp
• http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0202&L=NTBUGTRAQ&P=R4681
• http://online.securityfocus.com/bid/4135
• http://msdn.microsoft.com/library/en-us/acdata/ac_8_qd_12_23xd.asp

Credit

Our thanks to Microsoft Corporation for the information provided in their bulletin, and to Cesar Cerrudo, who reported this information on Bugtraq and NTBugTraq.

This document was written by Shawn V. Hernan.

Other Information

• CVE IDs: CAN-2002-0056
• Date Public: 19 Feb 2002
• Date First Published: 28 Mar 2002
• Date Last Updated: 29 Jul 2002
• Severity Metric: 9.57
• Document Revision: 26