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Plugin signature bypass

Moderate
vtorosyan published GHSA-rhxj-gh46-jvw8 Oct 12, 2022

Package

github.com/grafana/grafana (Grafana)

Affected versions

<= 9.+, <= 8.+, <=7.+

Patched versions

9.1.8, 8.5.14

Description

Today we are releasing Grafana 9.2. Alongside with new features and other bug fixes, this release includes a Moderate severity security fix for CVE-2022-31123

We are also releasing security patches for Grafana 9.1.8 and Grafana 8.5.14 to fix these issues.

Release 9.2, latest release, also containing security fix:

Release 9.1.8, only containing security fix:

Release 8.5.14, only containing security fix:

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 and Azure's Grafana as a service offering.

CVE-2022-31123

Summary

On July 4th as a result of an internal security audit we have discovered a bypass in the plugin signature verification by exploiting a versioning flaw.

We believe that this vulnerability is rated at CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L).

Impact

An attacker can convince a server admin to download and successfully run a malicious plugin even though unsigned plugins are not allowed.

Impacted versions

All installations for Grafana versions <=9.x, <=8.x, <=7.x

Solutions and mitigations

To fully address CVE-2022-31123 please upgrade your Grafana instances.
Appropriate patches have been applied to Grafana Cloud.

Reporting security issues

If you think you have found a security vulnerability, please send a report to security@grafana.com. 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.

Security announcements

We maintain a security category on our blog, where we will always post a summary, remediation, and mitigation details for any patch containing security fixes.

You can also subscribe to our RSS feed.

Severity

Moderate
6.1
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L

CVE ID

CVE-2022-31123

Weaknesses