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Grafana vulnerable to Authentication Bypass by Spoofing

Critical severity GitHub Reviewed Published Jun 22, 2023 to the GitHub Advisory Database • Updated Nov 6, 2023

Package

gomod github.com/grafana/grafana (Go)

Affected versions

>= 9.4.0, < 9.4.13
>= 9.3.0, < 9.3.16
>= 9.0.0, < 9.2.20
< 8.5.27

Patched versions

9.4.13
9.3.16
9.2.20
8.5.27

Description

Grafana is validating Azure AD accounts based on the email claim.

On Azure AD, the profile email field is not unique and can be easily modified.

This leads to account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant app.

References

Published by the National Vulnerability Database Jun 22, 2023
Published to the GitHub Advisory Database Jun 22, 2023
Reviewed Jun 23, 2023
Last updated Nov 6, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

EPSS score

0.184%
(56th percentile)

Weaknesses

CVE ID

CVE-2023-3128

GHSA ID

GHSA-mpv3-g8m3-3fjc

Source code

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