medium5.3
CVE-2021-36157
Path traversal in Grafana Cortex
Impact
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.)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/cortexproject/cortex | <= 1.9.0 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linuxfoundation | Cortex | through 1.9.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/cortexproject/cortex/pull/4375
- https://grafana.com/docs/grafana/latest/release-notes/
- https://github.com/advisories/GHSA-jphm-g89m-v42p
- https://nvd.nist.gov/vuln/detail/CVE-2021-36157
- https://github.com/cortexproject/cortex/commit/d9e1f81f40c607b9e97c2fc6db70ae54679917c4