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CVE-2021-43813

4.3 · MEDIUM

Grafana is an open-source platform for monitoring and observability.

Published Dec 10, 2021CWE-22EPSS 56.59%

Overview

CVE-2021-43813 is a medium-severity vulnerability. It was published on December 10, 2021 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2021/12/10/4GitHubgithub.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0fGitHubgithub.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308dGitHubgithub.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2qRefgrafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/Refgrafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/Refgrafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/Refsecurity.netapp.com/advisory/ntap-20220107-0006/Refwww.openwall.com/lists/oss-security/2021/12/10/4GitHubgithub.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f

How CyberStrike helps

Frequently asked questions

What is CVE-2021-43813?

CVE-2021-43813 is a medium-severity vulnerability. It was published on December 10, 2021 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2021-43813?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-43813?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-43813?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-43813 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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