Aaron
63285f61aa
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34 lines
1.1 KiB
Markdown
34 lines
1.1 KiB
Markdown
# 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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