Check Point Advisories

Apache Struts 2 ConversionErrorInterceptor OGNL Script Injection (CVE-2012-0391)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-120
Date Published:	16 Apr 2012
Severity:	Critical
Last Updated:	Sunday 25 May, 2014
Source:
Industry Reference:	CVE-2012-0391
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A script injection vulnerability has been reported in Apache Struts 2. The vulnerability is due to an error in the way HTTP request parameters are interpreted as OGNL expressions when conversion errors occur. A remote attacker may exploit this issue by sending a malformed HTTP request to an affected Strut 2 application. 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 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

In the IPS tab, click Protections and find the Apache Struts 2 ConversionErrorInterceptor OGNL Script Injection 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: Apache Server Protection Violation.
Attack Information: Apache Struts 2 ConversionErrorInterceptor OGNL script injection