CVE-2021-43813

 

Published at: - 10-12-2021 07:15

Last modified: - 31-03-2022 06:31

Total changes: - 5

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308d
• https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/
• https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2q
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/
• https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f
• [oss-security] 20211210 CVE-2021-43813 and CVE-2021-43815 - Grafana directory traversal for some .md and .csv files-Mailing List, Patch, Release Notes, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20220107-0006/

 

Keywords

NVD

 

CVE-2021-43813

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures