CVE-2021-43813

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.

Risk Information

Base Score

4.3

MODERATE

Vector

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

EPSS Score

Exploitation Probability

6.405

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2021-43813,CVE-2021-43815 are affected in GrafanaEnterprise 7.5.9	Windows
Vulnerabilities CVE-2021-43813,CVE-2021-43815 are affected in GrafanaEnterprise 8.3.0--	Windows
(RHSA-2022:1781) grafana security, bug fix, and enhancement update grafana-7.5.11-2.el8.x86_64.rpm	Linux
Grafana update (ELSA-2023-6972) grafana-9.2.10-7.el8_9.x86_64.rpm	Linux

Patch Details

Click to see the patches provided by ManageEngine for this CVE

Patch ID	Patch Description
PATCH-335779	GrafanaEnterprise (10.3.1)
PATCH-335779	GrafanaEnterprise (10.3.1)

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234