CVE-2021-39226 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Reference

https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269 https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/ https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9 https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/ http://www.openwall.com/lists/oss-security/2021/10/05/4 https://lists.fedoraproject.org/archives/list/[email protected]/message/E6ANHRDBXQT6TURLP2THM26ZPDINFBEG/ https://security.netapp.com/advisory/ntap-20211029-0008/ https://lists.fedoraproject.org/archives/list/[email protected]/message/DCKBFUSY6V4VU5AQUYWKISREZX5NLQJT/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

7.3