Check Point Advisories

Apache Struts 2 ParametersInterceptor OGNL Command Execution (CVE-2011-3923)

Check Point Reference: CPAI-2012-217
Date Published: 14 May 2012
Severity: Critical
Last Updated: Monday 14 May, 2012
Source:
Industry Reference:CVE-2011-3923
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description A command execution vulnerability has been reported in Apache Struts 2. The vulnerability is due to insufficient input validation in the ParametersInterceptor component when parsing specially crafted HTTP requests. A remote attacker can exploit this vulnerability by sending a specially crafted HTTP request to a target system. Successful exploitation would allow an attacker to execute arbitrary OGNL expressions in the security context of the web application server.

Protection Overview

This protection will detect and block malicious HTPP requests.

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 Struts 2 ParametersInterceptor OGNL Command Execution 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 Struts 2 ParametersInterceptor OGNL command execution

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