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.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2019:3403 advisory.

  - The containers/image library used by the container tools Podman, Buildah, and Skopeo in Red Hat Enterprise     Linux version 8 and CRI-O in OpenShift Container Platform, does not enforce TLS connections to the     container registry authorization service. An attacker could use this vulnerability to launch a MiTM attack     and steal login credentials or bearer tokens. (CVE-2019-10214)

  - ip_reass in ip_input.c in libslirp 4.0.0 has a heap-based buffer overflow via a large packet because it     mishandles a case involving the first fragment. (CVE-2019-14378)

  - 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. (CVE-2019-9946)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4593 advisory.

    - [OLCNE-235] [CVE-2019-9946] portmap inserts rules at the front of the iptables nat chains
    -- CVE-2019-9946
    -- CVE-2019-1002101
    -- CVE-2019-1002100

    kubeadm-ha-setup
    - CVE-2018-16875
    - Update dashboard image (CVE-2018-18264)
    - [OLCNE-235] [CVE-2019-9946] portmap inserts rules at the front of the iptables nat chains

    kubernetes-cni-plugins

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3403 advisory.

    The container-tools module contains tools for working with containers, notably podman, buildah, skopeo,     and runc.

    Security Fix(es):

    * QEMU: slirp: heap buffer overflow during packet reassembly (CVE-2019-14378)

    * containers/image: not enforcing TLS when sending username+password credentials to token servers leading     to credential disclosure (CVE-2019-10214)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Resolves: #1715758 - CVE-2019-9946

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the kubernetes package has been released.

ID	Name	Product	Family	Severity
196019	RHEL 8 : kubernetes (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
184867	Rocky Linux 8 : container-tools:rhel8 (RLSA-2019:3403)	Nessus	Rocky Linux Local Security Checks	high
180683	Oracle Linux 7 : kubernetes / kubeadm-upgrade / kubeadm-ha-setup (ELSA-2019-4593)	Nessus	Oracle Linux Local Security Checks	high
130536	RHEL 8 : container-tools:rhel8 (RHSA-2019:3403)	Nessus	Red Hat Local Security Checks	high
125932	Fedora 29 : containernetworking-plugins (2019-24217abfdf)	Nessus	Fedora Local Security Checks	high
125867	Fedora 30 : containernetworking-plugins (2019-d2b57d3b19)	Nessus	Fedora Local Security Checks	high
124861	Photon OS 2.0: Kubernetes PHSA-2019-2.0-0148	Nessus	PhotonOS Local Security Checks	high

Detections

Analytics

CVE-2019-9946

high

Tenable Plugins

high

high

high

high

high

high

high