Headline
CVE-2022-39328: Race condition allowing privilege escalation
Grafana is an open-source platform for monitoring and observability. Versions starting with 9.2.0 and less than 9.2.4 contain a race condition in the authentication middlewares logic which may allow an unauthenticated user to query an administration endpoint under heavy load. This issue is patched in 9.2.4. There are no known workarounds.
Today we are releasing Grafana 9.2.4. Alongside other bug fixes, this patch release includes critical security fixes for CVE-2022-39328.
Release 9.2.4, latest patch, also containing security fix:
- Download Grafana 9.2.4
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.
Summary
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 make a 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 instead the middleware of a public query.
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.
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.
Security announcements
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Related news
Today we are releasing Grafana 9.2.4. Alongside other bug fixes, this patch release includes critical security fixes for CVE-2022-39328. Release 9.2.4, latest patch, also containing security fix: - [Download Grafana 9.2.4](https://grafana.com/grafana/download/9.2.4) Appropriate patches have been applied to [Grafana Cloud](https://grafana.com/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 ### Summary 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](https://github.com/grafana/grafana/blob/main/pkg/web/router.go#L153) could make a...