CVE-2021-41090 : What You Need to Know
Learn about CVE-2021-41090 where Grafana Agent exposes inline secrets in plaintext, impacting data security. Find mitigation steps and version updates here.
Grafana Agent prior to versions 0.20.1 and 0.21.2 exposes inline secrets in plaintext, impacting confidential data security.
Understanding CVE-2021-41090
This CVE involves the exposure of sensitive information due to a configuration issue in Grafana Agent.
What is CVE-2021-41090?
Grafana Agent telemetry collector exposes inline secrets in plaintext, making them accessible over specific endpoints without proper authentication. This issue affects versions 0.14.0 to 0.20.1 and 0.21.0 to 0.21.2.
The Impact of CVE-2021-41090
The vulnerability allows unauthenticated users to access sensitive inline secrets, jeopardizing confidentiality.
Technical Details of CVE-2021-41090
Grafana Agent's vulnerability details and impact are outlined below.
Vulnerability Description
Inline secrets in metrics instance configurations are exposed in plaintext over specific endpoints, leading to potential data exposure.
Affected Systems and Versions
- Product: Grafana Agent
- Vendor: Grafana
- Versions: >= 0.14.0, < 0.20.1 and >= 0.21.0, < 0.21.2
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Confidentiality Impact: Low
- Integrity Impact: Low
- Privileges Required: None
- User Interaction: None
- CVSS Base Score: 6.5 (Medium)
- Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Mitigation and Prevention
Protecting systems from CVE-2021-41090 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade Grafana Agent to versions 0.20.1 or 0.21.2 to apply the patch.
- Implement non-inline secrets where possible.
- Restrict API access using network interface restrictions and firewall rules.
Long-Term Security Practices
- Configure Grafana Agent to use HTTPS with client authentication.
- Regularly review and update access controls.
- Educate users on secure practices for managing sensitive information.
Patching and Updates
- Apply the available patches by upgrading to Grafana Agent versions 0.20.1 or 0.21.2.
- Stay informed about security advisories and updates from Grafana.