Directory Traversal The advisory has been revoked - it doesn't affect any version of package grafana-loki (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS8-GRAFANALOKI-2317267
- published14 Dec 2021
- disclosed10 Dec 2021
Introduced: 10 Dec 2021
CVE-2021-43813 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grafana-loki package and not the grafana-loki package as distributed by Centos.
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.
References
- https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2q
- https://access.redhat.com/security/cve/CVE-2021-43813
- https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f
- 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://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/
- http://www.openwall.com/lists/oss-security/2021/12/10/4
- https://access.redhat.com/errata/RHSA-2022:1781
- https://security.netapp.com/advisory/ntap-20220107-0006/