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Update Protection against IBM DB2 Database Server CONNECT Request Denial of Service Vulnerability

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Check Point Reference: CPAI-2009-094
Date Published:
Preemptive Since:
Severity:
Last Updated:
Source: Secunia Advisory: SA33529
Industry Reference(s): CVE-2009-0172
Protection Provided by: Security Gateway
  • R70
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
IBM DB2 prior to 9.1 FP6a
IBM DB2 prior to 9.5 FP3a
Vulnerability Description
A denial of service vulnerability has been reported in IBM DB2 Database Server. IBM DB2 Database is a relational database management system that consists of a set of services that work together to provide data processing functionalities. A remote attacker may exploit this issue to cause the vulnerable server to stop responding.
Update/Patch Available
Apply patches:
IBM
Vulnerability Details
The vulnerability is due to insufficient input validation by the IBM DB2 Database Server while processing malformed connect data streams. A remote attacker may exploit this issue by sending a malicious Distributed Relational Database Architecture (DRDA) connect data stream to the server. Successful exploitation of this vulnerability will cause the server to enter an infinite loop once it will process the malformed CONNECT request, creating a denial of service condition.

Protection Overview
This protection will detect and block malformed CONNECT requests sent to the IBM DB2 Database Server.

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, Protection tab and select the version of your choice

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R70

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Database Protections > IBM.
2. In the right pane, double-click the IBM DB2 Database Server CONNECT Request Denial of Service protection.
3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings.
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: IBM Protection Violation
Attack Information: IBM DB2 database server CONNECT request denial of service

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?
1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Application Intelligence > Various Backup Software Protocols, and select the IBM DB2 Database protection group.
3. Click

IBM DB2 Database protocol error -- received SECCHK without ACCSEC 
and
IBM DB2 Database protocol error -- SECCHK received with missing parameters ( IPS-1 NGX R65 only).

4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

 

How Do I Know if My Network is Under Attack?
Upon attack, the following entries will be logged:

Alert Name: IBM DB2 Database
Description: IBM DB2 Database protocol error -- received SECCHK  without ACCSEC

 

Alert Name: IBM DB2 Database
Description: IBM DB2 Database protocol error -- SECCHK received with missing parameters