Grafana account takeover via OAuth vulnerability

CVE-2022-31107 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Today we are releasing Grafana 8.3.10, 8.4.10, 8.5.9 and 9.0.3. This patch release includes a HIGH severity security fix for an Oauth takeover vulnerability in Grafana.

Release v.9.0.3, containing this security fix and other patches:

Release v.8.5.9, containing this security fix and other fixes:

Release v.8.4.10, containing this security fix and other fixes:

Release v.8.3.10, containing this security fix and other fixes:

Grafana account takeover via OAuth vulnerability (CVE-2022-31107)

Summary

On June 27 the HTTPVoid team contacted Grafana Labs to disclose a Grafana account takeover via an OAuth vulnerability.

We believe that this vulnerability is rated at CVSS 7.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L).

Impact

It is possible for a malicious user who has authorization to log into a Grafana instance via a configured OAuth IdP to take over an existing Grafana account under some conditions.

Affected versions with HIGH severity

All Grafana >=5.3 versions are affected by this vulnerability.

Solutions and mitigations

All installations after Grafana v5.3 should be upgraded as soon as possible.

As a workaround it is possible to disable any OAuth login or ensure that all users authorized to log in via OAuth have a corresponding user account in Grafana linked to their email address.

Appropriate patches have been applied to Grafana Cloud and as always, we closely coordinated with all cloud providers licensed to offer Grafana Pro. They have received early notification under embargo and confirmed that their offerings are secure at the time of this announcement. This is applicable to Amazon Managed Grafana.

Timeline

Here is a detailed timeline starting from when we originally learned of the issue. All times in UTC.

2022-06-27 19:00 - Research submission of vulnerability report
2022-06-27 20:53 - Issue triaged, confirmed positive, and internal incident raised
2022-06-28 08:42 - Fix PR submitted and reviewed
2022-06-28 20:58 - All Grafana Cloud hosted Grafana instances patched
2022-07-05 07:14 - Customers informed under embargo
2022-07-14 02:00 - Public release

Acknowledgement

We would like to thank the HTTPVoid team for responsibly disclosing the vulnerability.

Reporting security issues

If you think you have found a security vulnerability, please send a report to [email protected]. This address can be used for all of Grafana Labs' open source and commercial products (including, but not limited to Grafana, Grafana Cloud, Grafana Enterprise, and grafana.com). We can accept only vulnerability reports at this address. We would prefer that you encrypt your message to us by using our PGP key. The key fingerprint is

F988 7BEA 027A 049F AE8E 5CAA D125 8932 BE24 C5CA

The key is available from keyserver.ubuntu.com.

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Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2024-05-14 22:22:35 UTC
Updated
2026-01-16 21:58:06 UTC
GitHub reviewed
2024-05-14 22:22:35 UTC
NVD published
2022-07-15

EPSS Score

Score Percentile
0.51% 66.50%

CVSS Scores

Base score Version Severity Vector
7.1 3.1 —
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
7.6 4.0 —
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:H)
Exploitation depends on constrained or hard-to-reproduce conditions.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H)
High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:L)
Limited availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-mx47-6497-3fv2 ↗
CVE CVE-2022-31107 ↗

CWEs

CWE id Name
CWE-863 Incorrect Authorization

Affected packages (4)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/grafana/grafana >= 8.4.0, < 8.4.10 8.4.10 —
go github.com/grafana/grafana >= 8.5.0, < 8.5.9 8.5.9 —
go github.com/grafana/grafana >= 9.0.0, < 9.0.3 9.0.3 —
go github.com/grafana/grafana >= 5.3.0-beta1, < 8.3.10 8.3.10 —

References

cvelogic Threat Intelligence