VULNERABILITY INTELLIGENCE

CVE-2018-20321

CVSS score8.8 HIGH
EPSS probability1.77%
CISA KEVNot currently listed
Published2019-04-10
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-668

Primary references