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Improper Enforcement of Behavioral Workflow Affecting container-tools:rhel8/runc package, versions <0:1.0.0-60.rc8.module+el8.1.0+4081+b29780af

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.21% (59th percentile)

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  • Snyk IDSNYK-RHEL8-CONTAINERTOOLS-4385051
  • published26 Jul 2021
  • disclosed28 Mar 2019
Report a new vulnerability Found a mistake?

Introduced: 28 Mar 2019

CVE-2019-9946  (opens in a new tab)
CWE-841  (opens in a new tab)

How to fix?

Upgrade RHEL:8 container-tools:rhel8/runc to version 0:1.0.0-60.rc8.module+el8.1.0+4081+b29780af or higher.
This issue was patched in RHSA-2019:3403.

NVD Description

Note: Versions mentioned in the description apply only to the upstream container-tools:rhel8/runc package and not the container-tools:rhel8/runc package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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