CVE-2023-4399 : Exploit Details and Defense Strategies

This CVE was assigned by GRAFANA and affects Grafana Enterprise versions prior to 10.1.5, 10.0.9, 9.5.13, and 9.4.17. It allows bypassing restrictions in Grafana Enterprise's Request security feature.

Understanding CVE-2023-4399

This vulnerability in Grafana Enterprise's Request security feature can be exploited to bypass deny lists and potentially call specific hosts using punycode encoding.

What is CVE-2023-4399?

CVE-2023-4399 affects Grafana Enterprise and involves bypassing restrictions set by the Request security feature through punycode encoding in the request address. This can lead to unauthorized host calls.

The Impact of CVE-2023-4399

The impact of CVE-2023-4399 is rated as MEDIUM severity. It has a CVSS v3.1 base score of 6.6, with high confidentiality impact, low availability impact, and privileges required for exploitation.

Technical Details of CVE-2023-4399

This section dives deeper into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows an attacker to bypass deny lists in Grafana Enterprise's Request security feature by using punycode encoding, potentially enabling unauthorized host calls.

Affected Systems and Versions

Grafana Enterprise versions 10.1.5 and below, 10.0.9 and below, 9.5.13 and below, and 9.4.17 and below are affected by CVE-2023-4399.

Exploitation Mechanism

Exploiting this vulnerability involves leveraging punycode encoding in the request address to bypass the deny list set by the Request security feature in Grafana Enterprise.

Mitigation and Prevention

To address CVE-2023-4399 and enhance overall security, certain measures can be taken.

Immediate Steps to Take

Update Grafana Enterprise to version 10.1.5 or newer to mitigate the vulnerability.
Monitor network activity for any suspicious requests that could indicate exploitation attempts.

Long-Term Security Practices

Regularly review and update security configurations in Grafana Enterprise to address potential vulnerabilities promptly.
Conduct security training for administrators to ensure proper configuration of security features.

Patching and Updates

Ensure timely installation of software patches and updates provided by Grafana to address known security issues and enhance the resilience of the platform.