CVE-2021-31231 Explained : Impact and Mitigation
Learn about CVE-2021-31231 impacting Alertmanager in Grafana Enterprise Metrics, allowing local file disclosure with potential data exposure risk. Find mitigation steps and version updates.
The Alertmanager in Grafana Enterprise Metrics before 1.2.1 and Metrics Enterprise 1.2.1 is impacted by a local file disclosure vulnerability.
Understanding CVE-2021-31231
This CVE highlights a vulnerability in Alertmanager in Grafana Enterprise Metrics that can be exploited for local file disclosure.
What is CVE-2021-31231?
The vulnerability arises when experimental.alertmanager.enable-api is utilized, allowing attackers to use the HTTP basic auth password_file as an attack vector to disclose file content through a webhook or manipulate any file content via the alertmanager templates.
The Impact of CVE-2021-31231
CVE-2021-31231 poses a risk of local file disclosure, potentially leading to unauthorized access to sensitive information and data manipulation if exploited.
Technical Details of CVE-2021-31231
The technical details include the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability in Alertmanager in Grafana Enterprise Metrics enables local file disclosure through the misuse of experimental.alertmanager.enable-api.
Affected Systems and Versions
The affected systems include Grafana Enterprise Metrics versions before 1.2.1 and Metrics Enterprise 1.2.1.
Exploitation Mechanism
Attackers can leverage the HTTP basic auth password_file and alertmanager templates to send or manipulate file content.
Mitigation and Prevention
To address CVE-2021-31231, immediate steps should be taken, and long-term security practices must be implemented.
Immediate Steps to Take
Immediate actions involve updating to the patched versions, monitoring for any unauthorized access, and reviewing webhook configurations.
Long-Term Security Practices
Implementing strict access controls, regular security audits, and training employees on safe webhook usage are crucial for long-term security.
Patching and Updates
Ensure that Alertmanager in Grafana Enterprise Metrics is updated to version 1.2.1 or later to mitigate the local file disclosure vulnerability.