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.
References (2)
Core 2
Core References
Mitigation, Vendor Advisory x_refsource_confirm
https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/
Vendor Advisory x_refsource_confirm
https://forums.rancher.com/c/announcements
Scores
CVSS v3
8.8
EPSS
0.0044
EPSS Percentile
63.5%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-668
Status
published
Products (2)
rancher/rancher
2.0.0 - 2.1.6Go
suse/rancher
2.0.0 - 2.1.5
Published
Apr 10, 2019
Tracked Since
Feb 18, 2026