CVE-2021-36156 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://github.com/grafana/loki/pull/4020#issue-694377133 https://github.com/grafana/loki/releases/tag/v2.3.0

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3