CVE-2020-10749

A vulnerability was found in affected container networking implementations that allow malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending “rogue” IPv6 router advertisements to the host or other containers, to redirect traffic to the malicious container.

In OpenShift Container Platform 4, the default network plugin, OpenShift SDN, and OVN Kubernetes, do not forward IPv6 traffic, making this vulnerability not exploitable. The affected code from containernetworking/plugins is however still included in these plugins, hence this vulnerability is rated Low for both OpenShift SDN and OVN-Kubernetes.

IPv6 traffic is not forwarded by the OpenShift SDN in OpenShift Container Platform 3.11, making this vulnerability not exploitable. However, the affected code from containernetworking/plugins is still included in the atomic-openshift package, hence this vulnerability is rated Low for OpenShift Container Platform 3.11.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Prevent untrusted, non-privileged containers from running with CAP_NET_RAW.