Microsoft SQL Server contains buffer overflow in code used to process "BULK INSERT" queries

Overview

The Microsoft SQL Server contains a buffer overflow vulnerability that may allow remote attackers to execute arbitrary code with system privileges.

Description

The Microsoft SQL Server contains a buffer overflow vulnerability in the code used to process “Bulk Insert” queries. Bulk Insert queries allow the SQL user to supply a file containing records to be imported into the SQL database. If an attacker supplies a file with an excessively long filename, it is possible to overflow the application stack and alter the flow of execution, resulting in the execution of arbitrary code. Note that successful exploitation of this vulnerability requires Bulk Administrator or Administrator group privileges.

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Impact

This vulnerability may allow remote attackers to execute arbitrary code with system privileges.

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Solution

Apply a patch

Microsoft has published Security Bulletin MS02-034 to address this vulnerability. For more information, please see

http://www.microsoft.com/technet/security/bulletin/MS02-034.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

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Vendor Information

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Microsoft Corporation __ Affected

Notified: July 11, 2002 Updated: July 12, 2002

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 has published Security Bulletin MS02-034 to address this vulnerability. For more information, please see

http://www.microsoft.com/technet/security/bulletin/MS02-034.asp

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23682620 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.microsoft.com/technet/security/bulletin/MS02-034.asp&gt;
• <http://support.microsoft.com/support/misc/kblookup.asp?id=Q316333&gt;
• <http://www.microsoft.com/technet/prodtechnol/sql/maintain/security/sql2ksec.asp&gt;
• <http://www.ngssoftware.com/vna/ms-sql.txt&gt;
• <http://www.nextgenss.com/advisories/ms-sqlbi.txt&gt;
• <http://online.securityfocus.com/bid/4847/info/&gt;

Acknowledgements

The CERT/CC thanks NGSSoftware for their discovery and analysis of this vulnerability.

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

Other Information

CVE IDs:	CVE-2002-0641
Severity Metric:	5.91 Date Public: