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.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
21 Nov 2024, 04:52
Type | Values Removed | Values Added |
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References | () https://access.redhat.com/errata/RHBA-2019:0862 - | |
References | () https://github.com/containernetworking/plugins/pull/269#issuecomment-477683272 - Patch, Third Party Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCN66VYB3XS76SYH567SO7N3I254JOCT/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGOOWAELGH3F7OXRBPH3HCNZELNLXYTW/ - | |
References | () https://security.netapp.com/advisory/ntap-20190416-0002/ - Patch, Third Party Advisory |
07 Nov 2023, 03:13
Type | Values Removed | Values Added |
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Information
Published : 2019-04-02 18:30
Updated : 2024-11-21 04:52
NVD link : CVE-2019-9946
Mitre link : CVE-2019-9946
CVE.ORG link : CVE-2019-9946
JSON object : View
Products Affected
cncf
- portmap
netapp
- cloud_insights
kubernetes
- kubernetes
CWE
CWE-670
Always-Incorrect Control Flow Implementation