46 lines
2.3 KiB
YAML
46 lines
2.3 KiB
YAML
id: CVE-2021-39226
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info:
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name: Grafana Snapshot - Authentication Bypass
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author: Evan Rubinstein
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severity: high
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description: Grafana instances up to 7.5.11 and 8.1.5 allow remote unauthenticated users to view the snapshot associated with the lowest database key by accessing the literal paths /api/snapshot/:key or /dashboard/snapshot/:key. If the snapshot is in public mode, unauthenticated users can delete snapshots by accessing the endpoint /api/snapshots-delete/:deleteKey. Authenticated users can also delete snapshots by accessing the endpoints /api/snapshots-delete/:deleteKey, or sending a delete request to /api/snapshot/:key, regardless of whether or not the snapshot is set to public mode (disabled by default).
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impact: |
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An attacker can bypass authentication and gain unauthorized access to Grafana Snapshot feature.
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remediation: 'This issue has been resolved in versions 8.1.6 and 7.5.11. If you cannot upgrade you can 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.'
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reference:
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- https://github.com/advisories/GHSA-69j6-29vr-p3j9
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- https://nvd.nist.gov/vuln/detail/CVE-2021-39226
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- https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269
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- https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/
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- http://www.openwall.com/lists/oss-security/2021/10/05/4
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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cvss-score: 7.3
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cve-id: CVE-2021-39226
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cwe-id: CWE-287
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epss-score: 0.92988
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epss-percentile: 0.98816
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cpe: cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
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metadata:
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max-request: 1
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vendor: grafana
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product: grafana
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shodan-query: title:"Grafana"
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tags: cve,cve2021,grafana,kev
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http:
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- method: GET
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path:
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- "{{BaseURL}}/api/snapshots/:key"
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matchers-condition: and
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matchers:
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- type: word
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words:
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- '"isSnapshot":true'
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- type: status
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status:
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- 200
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# digest: 490a0046304402200228264e9d3063bd2dfbff8eed8da1210c9a3e495a6d362f7ba1b463fca14d630220690054c7f4296f3fe8db71b933297fcfc325e761e3ffffa9b7360e3cae0baace:922c64590222798bb761d5b6d8e72950 |