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phpunit/CVE-2017-9841/README.zh-cn.md
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phpunit/CVE-2017-9841/README.zh-cn.md
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# phpunit 远程代码执行漏洞(CVE-2017-9841)
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composer是php包管理工具,使用composer安装扩展包将会在当前目录创建一个vendor文件夹,并将所有文件放在其中。通常这个目录需要放在web目录外,使用户不能直接访问。
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phpunit是php中的单元测试工具,其4.8.19 ~ 4.8.27和5.0.10 ~ 5.6.2版本的`vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php`文件有如下代码:
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```php
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eval('?>'.file_get_contents('php://input'));
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```
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如果该文件被用户直接访问到,将造成远程代码执行漏洞。
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参考链接:
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- http://web.archive.org/web/20170701212357/http://phpunit.vulnbusters.com/
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- https://www.ovh.com/blog/cve-2017-9841-what-is-it-and-how-do-we-protect-our-customers/
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## 漏洞环境
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执行如下命令启动一个php环境,其中phpunit被安装在web目录下。
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```
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docker compose build
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docker compose up -d
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```
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web环境将启动在`http://your-ip:8080`。
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## 漏洞复现
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直接将PHP代码作为POST Body发送给`http://your-ip:8080/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php`:
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