CVE-2022-39307 is a medium severity vulnerability affecting Grafana, an open-source platform for monitoring and observability. This vulnerability allows information leakage during the password reset process. When a user utilizes the 'forget password' functionality on the login page, a POST request is made to the '/api/user/password/sent-reset-email' URL. If the provided username or email does not exist, a JSON response is returned indicating 'user not found'. This behavior exposes sensitive information to unauthenticated users, posing a significant security risk.
The vulnerability has been assigned a CVSS score of 6.7, indicating a medium severity level. The risk to organizations includes unauthorized access to sensitive information that could lead to further attacks. Organizations should prioritize patching immediately, as this issue has been fixed in Grafana version 9.2.4 and backported to version 8.5.15, with no known workarounds available.
Given the potential for information leakage, it is crucial for organizations using Grafana to assess their exposure to this vulnerability. As of now, there are no reports of active exploitation or public proof of concept, but the nature of the vulnerability highlights the importance of timely updates and proactive security measures.
The vulnerability was published on November 9, 2022, and the last modification to its status was made on November 21, 2024. Organizations must remain vigilant and ensure that they are running patched versions of Grafana to mitigate any risk associated with CVE-2022-39307.
Vulnerability Details
The official description of CVE-2022-39307 states that this vulnerability allows unauthorized information disclosure through the password reset functionality. The affected product is Grafana, specifically versions prior to 9.2.4 and between 8.5.15 and 9.0.0. The vulnerability has been classified with the following CVE metrics:
Metric | Value |
|---|---|
CVSS Score | 6.7 |
Severity | Medium |
Attack Vector | Network |
User Interaction | Required |
Technical Analysis
The root cause of CVE-2022-39307 is improper handling of user feedback during the password reset process. Specifically, the application responds with an informative error message that reveals whether a username or email exists in the system. This can be exploited by an attacker to enumerate valid user accounts through repeated requests, thereby gaining access to sensitive user information.
The attack vector is primarily network-based, requiring an external actor to interact with the Grafana service. The attack complexity is rated as high, as it necessitates user interaction to trigger the password reset functionality. Privileges required for the attack are low; an attacker does not need an existing account to initiate the enumeration process.
The impacts of this vulnerability are significant. It can lead to unauthorized disclosure of usernames and potentially other sensitive information associated with the accounts. Confidentiality and integrity impacts are rated as high, while availability impact is low, as the service remains operational regardless of user enumeration attempts.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized access to user accounts through the enumeration of valid usernames. This vulnerability can be particularly problematic in environments where Grafana is used to monitor sensitive metrics or provide insights into critical infrastructure.
Organizations should assess the blast radius of this vulnerability, as successful exploitation could lead to further attacks, including phishing attempts or targeted attacks against valid accounts. Given the CVSS score of 6.7, organizations should address this vulnerability in their priority patch cycle.
With an EPSS score of 0.00219, the probability of exploitation in the wild is low but not negligible. Therefore, organizations should remain vigilant and monitor for any unusual activities related to their Grafana instances.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of Grafana prior to 8.5.15 and between 9.0.0 and 9.2.4. Organizations using these versions should ensure they are updated to the latest patched version to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
To address CVE-2022-39307, organizations are advised to upgrade to Grafana version 9.2.4 or later. For those using version 8.5.15, ensure the latest patch is applied. Detailed guidance can be found in the official penetration testing documentation to validate that the fixes are effective.
Detection Guidance
Organizations should monitor logs for unusual patterns related to the password reset process. Look for repeated failed attempts to reset passwords, as these may indicate an enumeration attack. Additionally, implement network controls to limit access to the Grafana instance based on trusted IP addresses.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-39307 lies in its representation of common vulnerabilities found in many web applications. Proper input validation and error handling are crucial in preventing information leakage. Security teams should prioritize training on secure coding practices to mitigate similar vulnerabilities in the future.
To strengthen defenses, organizations can implement a penetration testing methodology that assesses the security posture comprehensively.
In summary, CVE-2022-39307 underscores the importance of proactive security measures. By regularly updating systems and conducting security assessments, organizations can significantly reduce their risk exposure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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