Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
High
Attack Vector
Network
0

Kubernetes CSI volume snapshot, cloning and resizing features can result in unauthorized volume data access or mutation

Disclosure Date: December 05, 2019 •
CVE-2019-11255 CVSS v3 Base Score: 6.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
6.5 Medium
Impact Score:
5.2
Exploitability Score:
1.2
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
kubernetes-csi external-provisioner prior to 0.4.3
kubernetes-csi external-provisioner prior to 1.0.2
kubernetes-csi external-provisioner 1.1
kubernetes-csi external-provisioner prior to 1.2.2
kubernetes-csi external-provisioner prior to 1.3.1
kubernetes-csi external-snapshotter prior to 0.4.2
kubernetes-csi external-snapshotter prior to 1.0.2
kubernetes-csi external-snapshotter 1.1
kubernetes-csi external-snapshotter prior to 1.2.2
kubernetes-csi external-resizer 0.1
kubernetes-csi external-resizer 0.2
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • kubernetes,
  • redhat

Products

  • external-provisioner,
  • external-provisioner 1.3.0,
  • external-resizer,
  • external-snapshotter,
  • openshift container platform 3.11,
  • openshift container platform 4.1,
  • openshift container platform 4.2
Technical Analysis