Check Point Advisories

Oracle Java MBeanInstantiator.findClass Remote Code Execution - Ver2 (CVE-2013-0422)

Check Point Reference: CPAI-2014-0023
Date Published: 7 Jan 2014
Severity: Critical
Last Updated: Tuesday 07 January, 2014
Source:
Industry Reference:CVE-2013-0422
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description A code execution vulnerability has been reported in Oracle Java. The vulnerability is due to an access control failure in the com.sun.jmx.mbeanserver package and in the invokeWithArguments() method of the java.lang.invoke.MethodHandle class. A remote attacker could trigger this vulnerability by using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object then retrieving arbitrary Class references using the findClass method and using the Reflection API with recursion in a way that bypasses a security check by the java.lang.invoke.MethodHandles.Lookup.checkSecurityManager method due to the inability of the sun.reflect.Reflection.getCallerClass method to skip frames related to the new reflection API. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.

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 Oracle Java MBeanInstantiator.findClass Remote Code Execution - Ver2 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:  Oracle Protection Violation.
Attack Information:  Oracle Java MBeanInstantiator.findClass Remote Code Execution - Ver2

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