CVE-2022-47633 : Security Advisory and Response

A vulnerability in Kyverno 1.8.3 and 1.8.4 allows malicious entities to inject unsigned container images into protected Kubernetes clusters, impacting versions n/a. Mitigations are available in version 1.8.5.

Understanding CVE-2022-47633

This section provides insights into the nature and impact of the CVE-2022-47633 vulnerability.

What is CVE-2022-47633?

The CVE-2022-47633 vulnerability is an image signature validation bypass issue in Kyverno 1.8.3 and 1.8.4, enabling a malicious image registry or attacker to inject unsigned arbitrary container images into a protected Kubernetes cluster. The affected versions are n/a, and the fix is available in version 1.8.5.

The Impact of CVE-2022-47633

The vulnerability poses a risk of unauthorized container image injections into Kubernetes clusters, potentially leading to security breaches and compromise of the cluster integrity.

Technical Details of CVE-2022-47633

In this section, we delve into the technical specifics of the CVE-2022-47633 vulnerability.

Vulnerability Description

The vulnerability allows attackers to circumvent image signature validation, opening the door for the injection of unsigned container images into protected Kubernetes environments.

Affected Systems and Versions

Kyverno versions 1.8.3 and 1.8.4 are affected by this vulnerability, impacting the security of Kubernetes clusters that utilize these versions.

Exploitation Mechanism

Malicious image registries or man-in-the-middle attackers can exploit this vulnerability to introduce unsigned arbitrary container images into target Kubernetes clusters, bypassing signature validation mechanisms.

Mitigation and Prevention

This section outlines the steps to mitigate the CVE-2022-47633 vulnerability and prevent potential security risks.

Immediate Steps to Take

Users are advised to update to Kyverno version 1.8.5 to patch the vulnerability and prevent unauthorized image injections into Kubernetes clusters.

Long-Term Security Practices

Implement robust image validation and security measures within Kubernetes environments to prevent similar vulnerabilities and enhance overall cluster security.

Patching and Updates

Regularly monitor for security updates and patches from Kyverno to stay protected against emerging threats and vulnerabilities.