CVE-2021-39226

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

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/

Details

Source: MITRE

Published: 2021-10-05

Updated: 2021-11-28

Type: CWE-287

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 7.3

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

Impact Score: 3.4

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (7 total)

IDNameProductFamilySeverity
156937openSUSE 15 Security Update : grafana (openSUSE-SU-2022:0140-1)NessusSuSE Local Security Checks
high
154658FreeBSD : Grafana -- Snapshot authentication bypass (757ee63b-269a-11ec-a616-6c3be5272acd)NessusFreeBSD Local Security Checks
high
154157CentOS 8 : grafana (CESA-2021:3771)NessusCentOS Local Security Checks
high
154106Oracle Linux 8 : grafana (ELSA-2021-3771)NessusOracle Linux Local Security Checks
high
154084RHEL 8 : grafana (RHSA-2021:3770)NessusRed Hat Local Security Checks
high
154076RHEL 8 : grafana (RHSA-2021:3771)NessusRed Hat Local Security Checks
high
154071RHEL 8 : grafana (RHSA-2021:3769)NessusRed Hat Local Security Checks
high