Home/CVE/Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2
CVE

CVE-2019-11255

Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2

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.

MEDIUM · CVSS 4.8 EPSS 0.00797
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-20Improper Input Validation
▤

Affected Products & Versions

9
kubernetes external-provisioner>= 0.4.1 and <= 0.4.2
kubernetes external-provisioner>= 1.0.0 and <= 1.0.1
kubernetes external-provisioner>= 1.1.0 and <= 1.2.1
kubernetes external-provisionerall versions
kubernetes external-resizer>= 0.1.0 and <= 0.2.0
kubernetes external-snapshotter>= 0.4.0 and <= 0.4.1
kubernetes external-snapshotter>= 1.0.0 and <= 1.0.1
kubernetes external-snapshotter>= 1.1.0 and <= 1.2.1
▤

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/kubernetes-csi/external-provisioner MODERATE fixed in 0.4.3
Go github.com/kubernetes-csi/external-resizer MODERATE
Go github.com/kubernetes-csi/external-snapshotter/v6 MODERATE fixed in 1.0.2
▣

Scoring & Timeline

4.8
MEDIUM · CVSS v3.1 · jordan@liggitt.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Dec 2019 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
⚑

Vendor Advisories

4
rhsaRHSA-2019:4225Moderate
rhsaRHSA-2019:4054Moderate
rhsaRHSA-2019:4099Moderate
rhsaRHSA-2019:4096Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/kubernetes/kubernetes/issues/85233MitigationThird Party Advisory
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/aXiYN0q4uIw
https://security.netapp.com/advisory/ntap-20200810-0003/
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