Upstream information

CVE-2019-9946 at MITRE

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.

SUSE information

Overall state of this security issue: Revisit

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5
Vector AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.5 6.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High Low
Availability Impact None Low
SUSE Bugzilla entry: 1131057 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
CaaS Platform 1.0 kubernetes Not affected
CaaS Platform 2.0 kubernetes Not affected
CaaS Platform 3.0 kubernetes Affected
OpenStack Cloud Magnum Orchestration 7.0 kubernetes Not affected
SUSE Linux Enterprise Module for Public Cloud 12 kubernetes Not affected
caasp-4.0 kubernetes Analysis