CVE-2022-39229 : Exploit Details and Defense Strategies

Grafana users with email as a username can block other users from signing in.

Understanding CVE-2022-39229

Grafana versions prior to 9.1.8 and 8.5.14 have a vulnerability that allows one user to block another user's login attempt by registering someone else's email address as a username.

What is CVE-2022-39229?

Grafana is a popular open source data visualization platform for metrics, logs, and traces. The vulnerability in versions prior to 9.1.8 and 8.5.14 arises from the unique fields of a user's username and email address in Grafana.

The Impact of CVE-2022-39229

The impact of this vulnerability is that a malicious user can prevent another user from logging into the application by registering the victim's email address as their username, creating authentication issues for the legitimate user.

Technical Details of CVE-2022-39229

Vulnerability Description

The vulnerability allows a user to register with someone else's email address as their username, causing login issues for the legitimate user.

Affected Systems and Versions

Versions affected include Grafana versions >= 9.0.0 and < 9.1.8, and >= 8.5.0 and < 8.5.14.

Exploitation Mechanism

The exploitation involves registering a victim's email address as the attacker's username, leading to login authentication problems for the victim.

Mitigation and Prevention

Steps to address the CVE-2022-39229 vulnerability:

Immediate Steps to Take

Users are advised to update their Grafana installations to versions 9.1.8 or 8.5.14 where the vulnerability has been patched.

Long-Term Security Practices

Implement strict username and email validation checks to prevent unauthorized registrations with existing email addresses.

Patching and Updates

Regularly update Grafana to the latest secure versions to prevent exploitation of known vulnerabilities.