Current Description

Grafana is an open-source platform for monitoring and observability. In versions 5.3 until 9.0.3, 8.5.9, 8.4.10, and 8.3.10, it is possible for a malicious user who has authorization to log into a Grafana instance via a configured OAuth IdP which provides a login name to take over the account of another user in that Grafana instance. This can occur when the malicious user is authorized to log in to Grafana via OAuth, the malicious user's external user id is not already associated with an account in Grafana, the malicious user's email address is not already associated with an account in Grafana, and the malicious user knows the Grafana username of the target user. If these conditions are met, the malicious user can set their username in the OAuth provider to that of the target user, then go through the OAuth flow to log in to Grafana. Due to the way that external and internal user accounts are linked together during login, if the conditions above are all met then the malicious user will be able to log in to the target user's Grafana account. Versions 9.0.3, 8.5.9, 8.4.10, and 8.3.10 contain a patch for this issue. As a workaround, concerned users can disable OAuth login to their Grafana instance, or ensure that all users authorized to log in via OAuth have a corresponding user account in Grafana linked to their email address.

View Analysis Description

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  7.5 HIGH

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

CNA:  GitHub, Inc.

Base Score:  7.1 HIGH

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

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score: N/A

NVD score not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/grafana/grafana/security/advisories/GHSA-mx47-6497-3fv2	Release Notes  Third Party Advisory
https://grafana.com/docs/grafana/next/release-notes/release-notes-8-4-10/	Release Notes  Vendor Advisory
https://grafana.com/docs/grafana/next/release-notes/release-notes-8-5-9/	Release Notes  Vendor Advisory
https://grafana.com/docs/grafana/next/release-notes/release-notes-9-0-3/	Release Notes  Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	NIST   GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis 7/22/2022 12:58:36 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 5.3.0 up to (excluding) 8.3.10 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 8.4.0 up to (excluding) 8.4.10 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 8.5.0 up to (excluding) 8.5.9 *cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.3
Added	CVSS V3.1		NIST AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-863
Changed	Reference Type	https://github.com/grafana/grafana/security/advisories/GHSA-mx47-6497-3fv2 No Types Assigned	https://github.com/grafana/grafana/security/advisories/GHSA-mx47-6497-3fv2 Release Notes, Third Party Advisory
Changed	Reference Type	https://grafana.com/docs/grafana/next/release-notes/release-notes-8-4-10/ No Types Assigned	https://grafana.com/docs/grafana/next/release-notes/release-notes-8-4-10/ Release Notes, Vendor Advisory
Changed	Reference Type	https://grafana.com/docs/grafana/next/release-notes/release-notes-8-5-9/ No Types Assigned	https://grafana.com/docs/grafana/next/release-notes/release-notes-8-5-9/ Release Notes, Vendor Advisory
Changed	Reference Type	https://grafana.com/docs/grafana/next/release-notes/release-notes-9-0-3/ No Types Assigned	https://grafana.com/docs/grafana/next/release-notes/release-notes-9-0-3/ Release Notes, Vendor Advisory