CVE-2021-36157
Last modified
CVE-2021-36157 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in Grafana Cortex through 1.9.0. 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 Cortex will attempt to parse a rules file at that location and include some of the contents in the error message. EPSS estimates a 1.39% chance of exploitation in the next 30 days.
Description
An issue was discovered in Grafana Cortex through 1.9.0. 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 Cortex will attempt to parse a rules file at that location and include some of the contents in the error message. (Other Cortex API requests can also be sent a malicious OrgID header, e.g., tricking the ingester into writing metrics to a different location, but the effect is nuisance rather than information disclosure.)
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Cortex | <= 1.9.0 |
References
- https://github.com/cortexproject/cortex/pull/4375Patch, Third Party Advisory
- https://grafana.com/docs/grafana/latest/release-notes/Release Notes, Vendor Advisory
- https://github.com/cortexproject/cortex/pull/4375Patch, Third Party Advisory
- https://grafana.com/docs/grafana/latest/release-notes/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-36157?
How severe is CVE-2021-36157?
How do I fix CVE-2021-36157?
Are you affected by CVE-2021-36157?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST