Check Point Advisories

Non Compliant MS-SQL TCP

Vulnerability
Protection

Check Point Reference:	CPAI-2013-3553
Date Published:	5 Dec 2007
Severity:	High
Last Updated:	Sunday 15 September, 2024
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	MSSQL Protections use a TDS protocol parser. A parsing error can be an indication of malicious traffic.If a parsing error occurs, other protections might not be able to run.Note that if you are using TLS/SSL negotiation over MSSQL ports, traffic might not be inspected.

Protection Overview

By enabling this protection, You can configure the action that the parser will take once a parser error occurs. You can choose to drop the connection (in order to prevent malicious traffic from overriding other protections)or you can choose only to log those events.A "Detect" mode makes it possible to track unauthorized traffic without blocking it.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75 / R71 / R70

In the IPS tab, click Protections and find the Non Compliant MS-SQL TCP protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Microsoft SQL Server Protection Violation.
Attack Information: Parsing Error - Cannot Recognize TDS Header