Vulnerability Description
Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing the literal paths: /dashboard/snapshot/:key, or /api/snapshots/:key. If the snapshot "public_mode" configuration setting is set to true (vs default of false), unauthenticated users are able to delete the snapshot with the lowest database key by accessing the literal path: /api/snapshots-delete/:deleteKey. Regardless of the snapshot "public_mode" setting, authenticated users are able to delete the snapshot with the lowest database key by accessing the literal paths: /api/snapshots/:key, or /api/snapshots-delete/:deleteKey. The combination of deletion and viewing enables a complete walk through all snapshot data while resulting in complete snapshot data loss. This issue has been resolved in versions 8.1.6 and 7.5.11. If for some reason you cannot upgrade you can use a reverse proxy or similar to block access to the literal paths: /api/snapshots/:key, /api/snapshots-delete/:deleteKey, /dashboard/snapshot/:key, and /api/snapshots/:key. They have no normal function and can be disabled without side effects.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana | < 7.5.11 |
| Fedoraproject | Fedora | 34 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/10/05/4Mailing ListThird Party Advisory
- https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f06672Patch
- https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9ExploitMitigationVendor Advisory
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/Release Notes
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
- https://security.netapp.com/advisory/ntap-20211029-0008/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/05/4Mailing ListThird Party Advisory
- https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f06672Patch
- https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9ExploitMitigationVendor Advisory
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/Release Notes
- https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
FAQ
What is CVE-2021-39226?
CVE-2021-39226 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing the literal ...
How severe is CVE-2021-39226?
CVE-2021-39226 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-39226?
Check the references section above for vendor advisories and patch information. Affected products include: Grafana Grafana, Fedoraproject Fedora.