CVE-2022-39307: Grafana subject to Exposure of Sensitive Information resulting in User enumeration via forget password
Grafana is an open-source platform for monitoring and observability. 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. This leaks information to unauthenticated users and introduces a security risk. This issue has been patched in 9.2.4 and backported to 8.5.15. There are no known workarounds.
Other sources
Today we are releasing Grafana 9.2.4. Alongside other bug fixes, this patch release includes moderate security fixes for CVE-2022-39307.
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:
- Download Grafana 9.2.4
Release 8.5.15, only containing security fix:
- Download Grafana 8.5.15
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.
Username enumeration
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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— GitHub
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, the JSON response contains a “user not found” message which leaks information about which accounts already exist.
Affected Versions: Grafana <=8.x, Grafana <=9.x
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
go/github.com/grafana/grafanato a version that resolves this vulnerability.Fixed in 8.5.15 - Upgrade
Upgrade
go/github.com/grafana/grafanato a version that resolves this vulnerability.Fixed in 9.2.4 - Upgrade
Upgrade
redhat/grafana 9.2.4 grafanato a version that resolves this vulnerability.Fixed in 8.5.15 - Upgrade
Upgrade
Grafanato a version that resolves this vulnerability.Fixed in 9.2.4Patch CVE-2022-39307 - Upgrade
Upgrade
Grafanato a version that resolves this vulnerability.Fixed in 8.5.15Patch CVE-2022-39307
Event History
Frequently Asked Questions
What is CVE-2022-39307?
CVE-2022-39307 is a vulnerability in Grafana, an open-source platform for monitoring and observability.
What is the severity of CVE-2022-39307?
The severity of CVE-2022-39307 is medium, with a severity value of 5.3.
How does CVE-2022-39307 affect Grafana?
CVE-2022-39307 affects Grafana versions up to (but not including) 8.5.15, as well as versions between 9.0.0 and 9.2.4.
What is the impact of CVE-2022-39307?
The impact of CVE-2022-39307 is the leakage of a 'user not found' message when using the forget password feature, which can disclose information about valid usernames or email addresses.
How can I fix CVE-2022-39307?
To fix CVE-2022-39307, update Grafana to version 8.5.15 or later, or version 9.2.5 or later if using versions between 9.0.0 and 9.2.4.