CVE-2020-16164 : Exploit Details and Defense Strategies

An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28 that allows remote attackers to bypass access restrictions or cause denial of service by withholding RPKI Route Origin Authorisation files or X509 Certificate Revocation List files.

Understanding CVE-2020-16164

This CVE involves a vulnerability in the RIPE NCC RPKI Validator 3.x through version 3.1-2020.07.06.14.28.

What is CVE-2020-16164?

CVE-2020-16164 is a security flaw in the RPKI Validator that enables attackers to manipulate files, potentially leading to access restriction bypass or denial of service on dependent routing systems.

The Impact of CVE-2020-16164

The vulnerability allows remote attackers to strategically withhold specific files, compromising the integrity and security of the RPKI relying party's view. This could result in unauthorized access or disrupt routing systems.

Technical Details of CVE-2020-16164

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28 permits attackers to bypass access restrictions or disrupt dependent routing systems by withholding critical files.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions up to 3.1-2020.07.06.14.28 are affected.

Exploitation Mechanism

Attackers strategically withhold RPKI Route Origin Authorisation ".roa" files or X509 Certificate Revocation List files from the RPKI relying party's view to exploit this vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2020-16164 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the RIPE NCC RPKI Validator to the latest patched version.
Monitor for any unusual file manipulations or access patterns.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly review and update access control policies.
Conduct security audits and penetration testing to identify vulnerabilities.
Educate staff on cybersecurity best practices to prevent social engineering attacks.

Patching and Updates

Ensure timely installation of security patches and updates for the RIPE NCC RPKI Validator to address this vulnerability.