Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

December 2022

CVE-2022-47633: Kyverno's container image signature verification can be bypassed by a malicious registry or proxy

Security researchers at ARMO have found a high-severity vulnerability in the Kyverno admission controller container image signature verification mechanism. The vulnerability enables an attacker who is either running a malicious container image registry or is able to act as a proxy between the registry and Kyverno, to inject unsigned images into the protected cluster, bypassing the image verification policy. The vulnerability was introduced in version 1.8.3 and was fixed in version 1.8.5.

What is RCE in Kubernetes?

A detailed overview of the Remote Code Execution (RCE) attacks, how it affects the Kubernetes infrastructure, and how the vulnerabilities of the K8 systems can be mitigated. Remote Code Execution (RCE) is a vulnerability in systems that cybercriminals can exploit to perform attacks. In RCE attacks, hackers execute malicious code in target systems remotely, irrespective of their location on the network. That’s because they don’t need the target systems to have the execution functionality.