Mobile code: invoking untrusted mobile code
Description
This attack consists on manipulation of a mobile code in order to execute malicious operations at the client side. By intercepting client traffic using “man-in-the-middle” technique, a malicious user could modify the original mobile code with arbitrary operations that will be executed on client’s machine under his credentials. In other scenario, the malicious mobile code could be hosted in an untrustworthy web site or it could be permanently injected on a vulnerable web site thru an injection attack. This attack can be performed over Java or C++ applications and affects any operational system.
Severity
Medium to High
Likelihood of exploitation
Low
Examples
The following code demonstrates how this attack could be performed using a Java applet.
// here declarer a object URL with the path of the malicious class
URL[] urlPath= new URL[]{new URL("file:subdir/")};
// here generate a object “loader” which is responsible to load a class in the URL path
URLClassLoader classLoader = new URLClassLoader(urlPath);
//here declare a object of a malicious class contained in “classLoader”
Class loadedClass = Class.forName("loadMe", true, classLoader);<br><br>
External References
