PT-2019-19952 · Linux Foundation+5 · Cni+6
Etienne Champetier
·
Publicado
2019-03-28
·
Atualizado
2024-06-15
·
CVE-2019-9946
CVSS v3.1
7.0
Alta
| Vetor | AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H |
Name of the Vulnerable Software and Affected Versions
CNI versions 0.7.4 and earlier
Kubernetes versions prior to 1.11.9
Kubernetes versions prior to 1.12.7
Kubernetes versions prior to 1.13.5
Kubernetes versions prior to 1.14.0
Description
The issue is related to a network firewall misconfiguration in the CNI 'portmap' plugin. This plugin is used to set up HostPorts for CNI and inserts rules at the front of the iptables nat chains, which take precedence over the KUBE-SERVICES chain. As a result, 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.
Recommendations
For CNI version 0.7.4, update to version 0.7.5 to resolve the issue.
For Kubernetes versions prior to 1.11.9, update to version 1.11.9 or later.
For Kubernetes versions prior to 1.12.7, update to version 1.12.7 or later.
For Kubernetes versions prior to 1.13.5, update to version 1.13.5 or later.
For Kubernetes versions prior to 1.14.0, update to version 1.14.0 or later.
Correção
Encontrou algum problema na descrição? Tem algo a acrescentar? Fique à vontade para nos escrever 👾
Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Almalinux
Cni
Centos
Kubernetes
Red Hat
Rocky Linux