Privilege Escalation Vulnerability in Rancher 2 through 2.1.5

CVE-2018-20321 · HIGH Severity

AV:N/AC:L/AU:S/C:C/I:C/A:C

An issue was discovered in Rancher 2 through 2.1.5. Any project member with access to the default namespace can mount the netes-default service account in a pod, and then use that pod to execute administrative privileged commands against the k8s cluster. This could be mitigated by isolating the default namespace in a separate project, where only cluster admins can be given permissions to access. As of 2018-12-20, this bug affected ALL clusters created or imported by Rancher.

Learn more about our Web Application Penetration Testing UK.