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Security release: New versions of Grafana with critical and moderate fixes for CVE-2022-39328, CVE-2022-39307, and CVE-2022-39306

November 8, 2022 3 min

Today we are releasing Grafana 9.2.4. Alongside other bug fixes, this patch release includes critical and moderate severity security fixes for CVE-2022-39328, CVE-2022-39307, and CVE-2022-39306.

We are also releasing security patches for Grafana 8.5.15 to fix these issues.

Release 9.2.4, latest patch, also containing security fix:

Release 8.5.15, 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 Managed Grafana as a service offering.

Privilege escalation: Unauthorized access to arbitrary endpoints (CVE-2022-39328)

Summary

An internal security audit identified a race condition in the Grafana codebase, which allowed an unauthenticated user to query an arbitrary endpoint in Grafana. A race condition in the HTTP context creation could result in an HTTP request being assigned the authentication/authorization middlewares of another call. Under heavy load, it is possible that a call protected by a privileged middleware receives the middleware of a public query instead. As a result, an unauthenticated user can successfully query protected endpoints. The CVSS score for this vulnerability is 9.8 Critical.

Impact

Unauthenticated users can query arbitrary endpoints with malicious intent.

Impacted versions

All installations for Grafana versions >=9.2.x.

Solutions and mitigations

To fully address CVE-2022-39328, please upgrade your Grafana instances. Appropriate patches have been applied to Grafana Cloud.

Privilege escalation: Usernames/email addresses cannot be trusted (CVE-2022-39306)

Summary

Grafana admins can invite other members to the organization they are an admin for. When admins add members to the organization, non-existing users get an email invite while existing members are added directly to the organization. When an invite link is sent, it allows anyone with access to the link to sign up with whatever username/email address the user chooses and become a member of the organization. The CVSS score for this vulnerability is 6.4 Moderate.

Impact

Vulnerability makes it possible to use the invitation link to sign up with an arbitrary username/email with a malicious intent.

Impacted versions

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

Solutions and mitigations

To fully address CVE-2022-39306, please upgrade your Grafana instances. Appropriate patches have been applied to Grafana Cloud.

Username enumeration (CVE-2022-39307)

Summary

When using the forget password on the login page, a POST request is made to the /api/user/password/sent-reset-email URL. When the username or email does not exist, a JSON response contains a “user not found” message.

The CVSS score for this vulnerability is 5.3 Moderate.

Impact

The impacted endpoint leaks information to unauthenticated users and introduces a security risk.

Impacted versions

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

Solutions and mitigations

To fully address CVE-2022-39307, 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.

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