Vulnerability · Published Dec 10, 2021 · Assigned by GitHub_M
CVE-2021-43813Directory Traversal in Grafana
Medium 4.3
In plain English
A medium-severity path traversal in grafana from grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 56.6% (higher than 99.1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | grafana | 7.5.11-2.el8 | ALSA-2022:1781 |
| Alpine:v3.20 | grafana | 8.3.2-r0 | ALPINE-CVE-2021-43813 |
| Alpine:v3.21 | grafana | 8.3.2-r0 | ALPINE-CVE-2021-43813 |
| Alpine:v3.22 | grafana | 8.3.2-r0 | ALPINE-CVE-2021-43813 |
| Alpine:v3.23 | grafana | 8.3.2-r0 | ALPINE-CVE-2021-43813 |
| Alpine:v3.24 | grafana | 8.3.2-r0 | ALPINE-CVE-2021-43813 |
| Rocky Linux:8 | grafana | 0:7.5.11-2.el8 | RLSA-2022:1781 |
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2q x_refsource_CONFIRM
- https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f x_refsource_MISC
- https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308d x_refsource_MISC
- https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/ x_refsource_MISC
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/ x_refsource_MISC
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/ x_refsource_MISC
- [oss-security] 20211210 CVE-2021-43813 and CVE-2021-43815 - Grafana directory traversal for some .md and .csv files mailing-list, x_refsource_MLIST
- https://security.netapp.com/advisory/ntap-20220107-0006/ x_refsource_CONFIRM