Vulnerability CVE-2020-8567
Published: 2021-01-21

Description:
Kubernetes Secrets Store CSI Driver Vault Plugin prior to v0.0.6, Azure Plugin prior to v0.0.10, and GCP Plugin prior to v0.2.0 allow an attacker who can create specially-crafted SecretProviderClass objects to write to arbitrary file paths on the host filesystem, including /var/lib/kubelet/pods.

Type:

CWE-22

 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Microsoft -> Key vault provider for secrets store csi driver 
Hashicorp -> Vault provider for secrets store csi driver 
Google -> Secret manager provider for secret store csi driver 

 References:
https://github.com/kubernetes-sigs/secrets-store-csi-driver/issues/384
https://groups.google.com/g/kubernetes-secrets-store-csi-driver/c/BI2qisiNXHY
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