CVE-2020-29663 : Security Advisory and Response
Learn about CVE-2020-29663 affecting Icinga 2 versions 2.8.0 through 2.11.7 and 2.12.2. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
Icinga 2 v2.8.0 through v2.11.7 and v2.12.2 has an issue where revoked certificates due for renewal will automatically be renewed, ignoring the CRL. This issue is fixed in Icinga 2 v2.11.8 and v2.12.3.
Understanding CVE-2020-29663
This CVE involves a vulnerability in Icinga 2 versions that could lead to the automatic renewal of revoked certificates without considering the Certificate Revocation List (CRL).
What is CVE-2020-29663?
CVE-2020-29663 is a security vulnerability in Icinga 2 versions 2.8.0 through 2.11.7 and 2.12.2 that allows revoked certificates to be automatically renewed, bypassing the CRL.
The Impact of CVE-2020-29663
This vulnerability could potentially lead to unauthorized access or compromised security due to the improper handling of certificate revocation.
Technical Details of CVE-2020-29663
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The issue in Icinga 2 versions 2.8.0 through 2.11.7 and 2.12.2 allows revoked certificates to be automatically renewed, ignoring the CRL, which poses a security risk.
Affected Systems and Versions
- Icinga 2 versions 2.8.0 through 2.11.7
- Icinga 2 version 2.12.2
Exploitation Mechanism
The vulnerability enables attackers to potentially exploit the system by renewing revoked certificates without proper validation, leading to security breaches.
Mitigation and Prevention
Protecting systems from CVE-2020-29663 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade to Icinga 2 versions 2.11.8 or 2.12.3 where the issue is fixed.
- Monitor certificate renewals and revocations closely to detect any unauthorized renewals.
Long-Term Security Practices
- Regularly update and patch Icinga 2 to the latest versions to ensure security fixes are applied.
- Implement proper certificate management practices to prevent unauthorized renewals.
- Conduct security audits to identify and address any vulnerabilities in the system.
- Educate staff on the importance of certificate security and best practices.
Patching and Updates
Ensure that all systems running Icinga 2 are updated to versions 2.11.8 or 2.12.3 to mitigate the CVE-2020-29663 vulnerability.