Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Loki | <= 2.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/grafana/loki/pull/4020#issue-694377133Issue TrackingThird Party Advisory
- https://github.com/grafana/loki/releases/tag/v2.3.0PatchThird Party Advisory
- https://github.com/grafana/loki/pull/4020#issue-694377133Issue TrackingThird Party Advisory
- https://github.com/grafana/loki/releases/tag/v2.3.0PatchThird Party Advisory
FAQ
What is CVE-2021-36156?
CVE-2021-36156 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ../../se...
How severe is CVE-2021-36156?
CVE-2021-36156 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-36156?
Check the references section above for vendor advisories and patch information. Affected products include: Grafana Loki.