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CVE-2019-9946

Published: Apr 2, 2019Updated: Nov 21, 2024 Sources: CVE List NVDCWE-670
7.5HIGH
NVD MITRE
EPSS Score
3.1%
Top 13.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-670

Affected Products

cncf
oss-projectaka cncf crossplane, cncf envoy, cncf spire
portmapMixed
Cloud & SaaS
kubernetes
oss-project·USaka k8s
kubernetesOn-premDev Tool
Cloud & SaaS / container-orchestration
netapp
commercial·US
cloud insights
Hardware Firmware
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2019-9946?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://github.com/containernetworking/plugins/pull/269#issuecomment-477683272
github.com
https://security.netapp.com/advisory/ntap-20190416-0002/
security.netapp.com
https://access.redhat.com/errata/RHBA-2019:0862
access.redhat.com
and 2 more references View all →

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