CVE-2021-31232

low-risk
Published 2021-04-30

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.

Do I need to act?

-
0.09% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Cortex

Affected Vendors

Linuxfoundation

References (8)

Third Party Advisory https://community.grafana.com/c/security-announcements
Third Party Advisory https://github.com/cortexproject/cortex
Patch https://github.com/cortexproject/cortex/pull/4129/files
Release Notes https://lists.cncf.io/g/cortex-users/message/50
Third Party Advisory https://community.grafana.com/c/security-announcements
Third Party Advisory https://github.com/cortexproject/cortex
Patch https://github.com/cortexproject/cortex/pull/4129/files
Release Notes https://lists.cncf.io/g/cortex-users/message/50
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal