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. The issue is fixed in CNI 0.7.5 and Kubernetes 1.11.9, 1.12.7, 1.13.5, and 1.14.0.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| cncf | portmap | 0.7.5 | - |
| kubernetes | kubernetes | 1.11.9 | - |
| kubernetes | kubernetes | 1.12.0 - 1.12.7 |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
14
Affected Products
10
References
cncf / portmap
| - |
| kubernetes | kubernetes | 1.13.0 - 1.13.5 | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| kubernetes | kubernetes | - | - |
| netapp | cloud_insights | - | - |
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitability
Impact