CVE-2021-31232

The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 27%
VendorProductVersion
linuxfoundationcortex
𝑥
< 1.8.1
𝑥
= Vulnerable software versions
References
https://community.grafana.com/c/security-announcements
https://github.com/cortexproject/cortex
https://github.com/cortexproject/cortex/pull/4129/files
https://lists.cncf.io/g/cortex-users/message/50
https://community.grafana.com/c/security-announcements
https://github.com/cortexproject/cortex
https://github.com/cortexproject/cortex/pull/4129/files
https://lists.cncf.io/g/cortex-users/message/50