Check Point Advisories

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

Check Point Reference:	CPAI-2014-0833
Date Published:	3 Feb 2014
Severity:	Critical
Last Updated:	Wednesday 01 January, 2014
Source:	CVE-2013-0422
Protection Provided by:
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.