Check Point Advisories

Apache Tomcat Chunked Transfer Denial of Service - Ver 2 (CVE-2012-3544)

Check Point Reference: CPAI-2013-3543
Date Published: 10 Nov 2013
Severity: High
Last Updated: 5 Oct 2016
Industry Reference:CVE-2012-3544
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable?
Vulnerability Description A denial of service vulnerability has been identified in Apache Tomcat as it processes Chunked-Transfer encoded requests. The error is caused by Tomcat not discarding any extensions included in very long Chunked-transfer requests, even if they were not processed. A remote attacker could exploit this vulnerability to send a large amount of data to the server causing it to use up excessive resources.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Apache Tomcat Chunked Transfer Denial of Service - Ver 2 protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Apache Server Protection Violation.
Attack Information:  Apache Tomcat Chunked Transfer denial of service - Ver 2

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