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 a stored Cross Site Scripting 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:
Summary
On June 19 a security researcher contacted Grafana Labs to disclose a XSS vulnerability in the Unified Alerting feature of Grafana. After analysis, this stored XSS could be used to elevate privileges from Editor to Admin.
We believe that this vulnerability is rated at CVSS 7.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N).
Impact
An attacker can exploit this vulnerability to escalate privilege from editor to admin by tricking an authenticated admin to click on a link.
Affected versions with HIGH severity
All Grafana >=8.0 versions are affected by this vulnerability.
Solutions and mitigations
All installations after Grafana v8.0 should be upgraded as soon as possible.
As a workaround it is possible to disable alerting or use legacy alerting.
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.
2022-06-19 10:32 - Research submission of vulnerability report
2022-06-20 14:35- Issue triaged, confirmed positive, and internal incident raised
2022-06-20 18:40 - Fix PR submitted and reviewed
2022-06-23 07:12 - 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 Maxim Misharin for responsibly disclosing the vulnerability.
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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