CVE-2021-20335 : What You Need to Know

A detailed analysis of CVE-2021-20335 impacting MongoDB Ops Manager versions <= 4.2.24, highlighting the SSL vulnerability during the upgrade process.

Understanding CVE-2021-20335

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-20335?

The vulnerability in MongoDB Ops Manager <= 4.2.24 triggers a bug during upgrades to version <= 4.4.12, causing temporary SSL disablement for cluster members with SSL enabled.

The Impact of CVE-2021-20335

Customers with specific configurations face temporary SSL disablement during upgrades, impacting confidentiality and integrity.

Technical Details of CVE-2021-20335

Explore the specifics of the vulnerability including its description, affected systems, and exploitation mechanisms.

Vulnerability Description

The SSL disablement bug occurs during MongoDB Ops Manager upgrades, temporary in nature but impacting cluster security.

Affected Systems and Versions

Users of MongoDB Ops Manager <= 4.2.24 with clientCertificateMode=OPTIONAL are susceptible to SSL disablement during upgrades.

Exploitation Mechanism

The bug triggers SSL disablement for cluster members with SSL enabled, reverting after successful MongoDB Ops Manager upgrade.

Mitigation and Prevention

Discover the immediate steps to take and best practices to ensure long-term security postures.

Immediate Steps to Take

Users are advised to ensure proper SSL configurations and monitor SSL integrity during upgrades to prevent unintended disablement.

Long-Term Security Practices

Implement robust SSL monitoring protocols and maintain updated MongoDB Ops Manager versions to mitigate SSL vulnerabilities.

Patching and Updates

Update to MongoDB Ops Manager version 4.4.13+ to evade the SSL disablement issue during upgrades.