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Web Servers HTTP Flooding Denial of Service

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Check Point Reference: CPAI-2011-504
Date Published:
Severity:
Source: IPS Research Team
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
Web Servers
Vulnerability Description
A denial of service vulnerability has been reported in all web servers.
Vulnerability Details
The vulnerability is due to the server's inability to handle multiple incoming HTTP requests within a short period of time. Remote attackers may exploit this issue by rapidly sending a large number of HTTP requests to the server. The attack may be initiated from one or more sources (DDoS). Successful exploitation may cause the server to crash, resulting in a denial of service condition.

Protection Overview
IPS will detect and block HTTP requests sent to the server over a short period of time.

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 R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections, find the Web Servers HTTP Flooding Denial of Service protection using the Search tool and double-click on the protection. 
  2. In the Protection Details window, select the required profile and then click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings. 
  3. Configure the protection to your requirements. 
  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: Web Server Enforcement Violation
Attack Information: Web servers HTTP flooding denial of service