MEDIUM 5.3

GHSA-grj5-8x6q-hc9q

Path traversal in Grafana Loki

Quick fix

GHSA-grj5-8x6q-hc9q — github.com/grafana/loki: upgrade to the fixed version with the command below.

go get github.com/grafana/loki@v2.3.0

Details

An issue was discovered in Grafana Loki through 2.2.1. The header value X-Scope-OrgID is used to construct file paths for rules files, and if crafted to conduct directory traversal such as ae ../../sensitive/path/in/deployment pathname, then Loki will attempt to parse a rules file at that location and include some of the contents in the error message.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go / github.com/grafana/loki

Introduced in: 0 Fixed in: 2.3.0

Fix go get github.com/grafana/loki@v2.3.0

References

https://nvd.nist.gov/vuln/detail/CVE-2021-36156 [ADVISORY]
https://github.com/grafana/loki/pull/4020 [WEB]
https://github.com/grafana/loki/pull/4020#issue-694377133 [WEB]
https://github.com/grafana/loki [PACKAGE]
https://github.com/grafana/loki/releases/tag/v2.3.0 [WEB]