CVE-2021-39226: Snapshot authentication bypass in grafana
In CISA’s Known Exploited Vulnerabilities catalog: Grafana Authentication Bypass Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-287
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
grafana: grafana
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269 (opens in new tab)
- github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9 (opens in new tab)
- grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/ (opens in new tab)
- grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/ (opens in new tab)
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DCKB… (opens in new tab)
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6AN… (opens in new tab)
- security.netapp.com/advisory/ntap-20211029-0008/ (opens in new tab)
- www.openwall.com/lists/oss-security/2021/10/05/4 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)