CVE-2021-27018 : Security Advisory and Response
Learn about CVE-2021-27018 affecting Puppet Remediate versions prior to 2.0. Understand the impact, technical details, and mitigation steps for this security flaw.
A vulnerability has been identified in Puppet Remediate that affects versions prior to 2.0. The flaw lies in the mechanism responsible for validating certificates signed by an internal certificate authority, impacting clients using Tenable.sc as the vulnerability data source.
Understanding CVE-2021-27018
This section provides insights into the nature of the CVE-2021-27018 vulnerability.
What is CVE-2021-27018?
The flaw in the certificate validation mechanism allows certificates signed by an internal certificate authority to go unverified, posing a risk to affected systems.
The Impact of CVE-2021-27018
The vulnerability impacts clients configured to use Tenable.sc as their vulnerability data source, potentially leading to unauthorized access and security breaches.
Technical Details of CVE-2021-27018
In this section, we delve into the technical aspects of CVE-2021-27018.
Vulnerability Description
The flaw arises from improper certificate validation, enabling malicious actors to exploit certificates from an internal CA without proper verification.
Affected Systems and Versions
Puppet Remediate versions prior to 2.0 are vulnerable to this flaw, particularly affecting systems utilizing Tenable.sc for vulnerability data.
Exploitation Mechanism
Attackers can leverage the flaw in the certificate validation mechanism to bypass security protocols and gain unauthorized access to sensitive systems.
Mitigation and Prevention
Discover the necessary steps to mitigate the CVE-2021-27018 vulnerability.
Immediate Steps to Take
Users are advised to update Puppet Remediate to version 2.0 or later to patch the vulnerability and ensure proper certificate validation.
Long-Term Security Practices
Implementing strong security measures, regular system updates, and monitoring certificate validations can enhance overall system security.
Patching and Updates
Regularly apply security patches and updates to Puppet Remediate to prevent exploitation and maintain a secure environment.