CVE-2021-31232

Description

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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.09%

Vendor Advisory cncf.io

Affected: n/a n/a

References

Link	Tags
https://community.grafana.com/c/security-announcements	third party advisory
https://github.com/cortexproject/cortex	third party advisory
https://github.com/cortexproject/cortex/pull/4129/files	third party advisory patch
https://lists.cncf.io/g/cortex-users/message/50	release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-31232?: CVE-2021-31232 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31232?: To fix CVE-2021-31232, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31232 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-31232 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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