{"schemaVersion":3,"id":"CVE-2019-9946","aliases":["RHBA-2019:0862","UBUNTU-CVE-2019-9946","DEBIAN-CVE-2019-9946"],"status":"published","duplicateOf":null,"title":null,"description":"Cloud Native Computing Foundation (CNCF) CNI (Container Networking Interface) 0.7.4 has a network firewall misconfiguration which affects Kubernetes. The CNI 'portmap' plugin, used to setup HostPorts for CNI, inserts rules at the front of the iptables nat chains; which take precedence over the KUBE- SERVICES chain. Because of this, the HostPort/portmap rule could match incoming traffic even if there were better fitting, more specific service definition rules like NodePorts later in the chain. 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