CVE-2021-43798 : Security Advisory and Response

Grafana versions 8.0.0-beta1 through 8.3.0 are vulnerable to a path traversal issue, allowing unauthorized access to local files. This CVE affects multiple versions of Grafana, with specific patch requirements.

Understanding CVE-2021-43798

Grafana path traversal vulnerability impacting versions 8.0.0-beta1 through 8.3.0.

What is CVE-2021-43798?

Grafana, an open-source platform for monitoring, is susceptible to a directory traversal flaw that permits attackers to view local files using a crafted URL path.

The Impact of CVE-2021-43798

The vulnerability poses a high severity risk with a CVSS base score of 7.5, allowing attackers to access sensitive information without proper authorization.

Technical Details of CVE-2021-43798

Details regarding the vulnerability and affected systems.

Vulnerability Description

The vulnerability enables malicious actors to perform directory traversal attacks by manipulating the URL path on affected Grafana versions.

Affected Systems and Versions

Grafana versions 8.0.0 to 8.3.0 (excluding patched versions)
Vulnerable URLs:

<grafana_host_url>/public/plugins//

Exploitation Mechanism

Attack vector: Network-based Privileges required: None User interaction: None

Mitigation and Prevention

Actions to mitigate and prevent exploitation of the CVE.

Immediate Steps to Take

Upgrade to patched versions 8.0.7, 8.1.8, 8.2.7, or 8.3.1
Regularly monitor security advisories for updates

Long-Term Security Practices

Implement access controls and restrictions on directory paths
Conduct regular security audits and penetration testing

Patching and Updates

Apply security patches promptly and consistently to mitigate risks.