CVE-2021-43813

Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 10 Dec 2021, 17:30
Last modified:04 Aug 2024, 04:03

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.3 MEDIUM
v3.1 (cve.org)
EPSS Score
6.4% LOW
6% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

10 Dec 2021, 17:30
Published
Vulnerability first disclosed
04 Aug 2024, 04:03
Last Modified
Vulnerability information updated

Description

Grafana is an open-source platform for monitoring and observability. Grafana prior to versions 8.3.2 and 7.5.12 contains a directory traversal vulnerability for fully lowercase or fully uppercase .md files. The vulnerability is limited in scope, and only allows access to files with the extension .md to authenticated users only. Grafana Cloud instances have not been affected by the vulnerability. Users should upgrade to patched versions 8.3.2 or 7.5.12. For users who cannot upgrade, running a reverse proxy in front of Grafana that normalizes the PATH of the request will mitigate the vulnerability. The proxy will have to also be able to handle url encoded paths. Alternatively, for fully lowercase or fully uppercase .md files, users can block /api/plugins/.*/markdown/.* without losing any functionality beyond inlined plugin help text.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • v2.0•MEDIUM•Score: 4AV:N/AC:L/Au:S/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 6.40%• Percentile: 91%

Techniques & Countermeasures

  • CWE-22•Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

    The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Affected Systems

  • grafana•grafana

    ≥ 5.0.0, < 7.5.12 | ≥ 8.0.0, < 8.3.2

References (8)