Cert Manager
Monthly
Denial-of-service in cert-manager versions 1.18.0-1.18.4 and 1.19.0-1.19.2 allows network-adjacent attackers to crash the controller by poisoning DNS cache entries during ACME DNS-01 validation through unencrypted DNS traffic interception. An attacker positioned to intercept DNS queries from the cert-manager pod can inject malicious DNS responses that trigger a panic in the controller, disrupting certificate management operations in affected Kubernetes clusters. A patch is available for immediate deployment.
Denial-of-service in cert-manager versions 1.18.0-1.18.4 and 1.19.0-1.19.2 allows network-adjacent attackers to crash the controller by poisoning DNS cache entries during ACME DNS-01 validation through unencrypted DNS traffic interception. An attacker positioned to intercept DNS queries from the cert-manager pod can inject malicious DNS responses that trigger a panic in the controller, disrupting certificate management operations in affected Kubernetes clusters. A patch is available for immediate deployment.