CVE-2021-36156
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…
Does this matter?
Lower severity and a low EPSS score (1.49%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.49% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- grafana/loki
- Source
- cve@mitre.org
References
- https://github.com/grafana/loki/pull/4020#issue-694377133Issue Tracking, Third Party Advisory
- https://github.com/grafana/loki/releases/tag/v2.3.0Patch, Third Party Advisory
- https://github.com/grafana/loki/pull/4020#issue-694377133Issue Tracking, Third Party Advisory
- https://github.com/grafana/loki/releases/tag/v2.3.0Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.