The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4816 advisory.

    - [CVE-2019-16276] Kubernetes Vulnerabilities Allow Authentication Bypass, DoS
    - [CVE-2019-16276] Support patching flannel/dashboard on upgrade
    - [CVE-2019-16276] Support patching etcd on upgrade
    - [CVE-2019-16276] while upgrading a cluster patch the coredns image
    - CVE-2019-16276 : Update flannel , etcd coredns and dashboard images.

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.

An update of the kubernetes package has been released.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3905 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    This advisory contains the atomic-openshift RPM package for Red Hat OpenShift Container Platform 3.11.154.

    Security Fix(es):

    * kubernetes: YAML parsing vulnerable to Billion Laughs attack, allowing for remote denial of service     (CVE-2019-11253)

    * kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks (CVE-2019-11251)

    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.

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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3811 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    This advisory contains the atomic-openshift RPM package for Red Hat OpenShift Container Platform 3.9.102.

    Security Fix(es):

    * kubernetes: YAML parsing vulnerable to Billion Laughs attack, allowing for remote denial of service     (CVE-2019-11253)

    * atomic-openshift: OpenShift builds don't verify SSH Host Keys for the Git repository (CVE-2019-10150)

    * kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory     traversal (CVE-2019-11249)

    * kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks (CVE-2019-11251)

    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.

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.

The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2019:3266 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    This advisory contains the openshift RPM packages for Red Hat     OpenShift Container Platform 4.1.21.

    Security Fix(es):

    * kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks (CVE-2019-11251)

    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.

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

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

ID	Name	Product	Family	Severity
180704	Oracle Linux 7 : kubernetes (ELSA-2019-4816)	Nessus	Oracle Linux Local Security Checks	high
136099	Photon OS 3.0: Kubernetes PHSA-2020-3.0-0084	Nessus	PhotonOS Local Security Checks	medium
135869	Photon OS 2.0: Kubernetes PHSA-2020-2.0-0229	Nessus	PhotonOS Local Security Checks	medium
131153	RHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2019:3905)	Nessus	Red Hat Local Security Checks	medium
130747	RHEL 7 : OpenShift Container Platform 3.9 atomic-openshift (RHSA-2019:3811)	Nessus	Red Hat Local Security Checks	medium
130419	RHEL 7 / 8 : OpenShift Container Platform 4.1 openshift (RHSA-2019:3266)	Nessus	Red Hat Local Security Checks	medium

Detections

Analytics

CVE-2019-11251

medium

Tenable Plugins

high

medium

medium

medium

medium

medium