MEDIUM
In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using subpath volume mounts with any volume type (including non-privileged pods, subject to file permissions) can access files/directories outside of the volume, including the host's filesystem.
https://access.redhat.com/errata/RHSA-2018:0475
Source: MITRE
Published: 2018-03-13
Updated: 2019-10-09
Type: CWE-59
Base Score: 5.5
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 8
Severity: MEDIUM
Base Score: 9.6
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Impact Score: 5.8
Exploitability Score: 3.1
Severity: CRITICAL