CVE Vulnerability

CVE-2019-9946

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/containernetworking/plugins/pull/269#issuecomment-477683272 Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20190416-0002/ Patch Third Party Advisory
https://access.redhat.com/errata/RHBA-2019:0862
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FCN66VYB3XS76SYH567SO7N3I254JOCT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SGOOWAELGH3F7OXRBPH3HCNZELNLXYTW/
Configurations

Configuration 1

cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.13.6:beta0:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:alpha0:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:beta0:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:beta1:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:beta2:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.14.0:rc1:*:*:*:*:*:*
cpe:2.3:a:cncf:portmap:*:*:*:*:*:container_networking_interface:*:*
cpe:2.3:a:netapp:cloud_insights:-:*:*:*:*:*:*:*
Information

Published : 2019-04-02 06:30

Updated : 2020-08-24 05:37

NVD link : CVE-2019-9946

Mitre link : CVE-2019-9946

Products Affected
No products.
CWE
CWE-670