Vulnerability CVE-2019-11255
Published: 2019-12-05

Description:
Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2, <v1.3.1), external-snapshotter (<v0.4.2, <v1.0.2, v1.1, <1.2.2), and external-resizer (v0.1, v0.2) could result in unauthorized PersistentVolume data access or volume mutation during snapshot, restore from snapshot, cloning and resizing operations.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.5/10
4.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Redhat -> Openshift container platform 
Kubernetes -> External-provisioner 
Kubernetes -> External-resizer 
Kubernetes -> External-snapshotter 

 References:
https://access.redhat.com/errata/RHSA-2019:4054
https://access.redhat.com/errata/RHSA-2019:4096
https://access.redhat.com/errata/RHSA-2019:4099
https://access.redhat.com/errata/RHSA-2019:4225
https://github.com/kubernetes/kubernetes/issues/85233
https://groups.google.com/forum/#!topic/kubernetes-security-announce/aXiYN0q4uIw
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