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
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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
                kubernetes
- kubernetes
 
cncf
- portmap
 
netapp
- cloud_insights
 
CWE
                
                    
                        
                        CWE-670
                        
            Always-Incorrect Control Flow Implementation
