Vulnerability Details : CVE-2020-8567
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.
Vulnerability category: Directory traversal
Products affected by CVE-2020-8567
- Microsoft » Azure Key Vault Provider For Secrets Store Csi Driver » For KubernetesVersions before (<) 0.0.10cpe:2.3:a:microsoft:azure_key_vault_provider_for_secrets_store_csi_driver:*:*:*:*:*:kubernetes:*:*
- Google » Secret Manager Provider For Secret Store Csi Driver » For KubernetesVersions before (<) 0.2.0cpe:2.3:a:google:secret_manager_provider_for_secret_store_csi_driver:*:*:*:*:*:kubernetes:*:*
- cpe:2.3:a:hashicorp:vault_provider_for_secrets_store_csi_driver:*:*:*:*:*:kubernetes:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8567
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 17 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8567
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:P/A:N |
8.0
|
2.9
|
NIST | |
|
4.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L |
1.8
|
2.7
|
Kubernetes | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2020-8567
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
-
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory.Assigned by: jordan@liggitt.net (Secondary)
References for CVE-2020-8567
-
https://github.com/kubernetes-sigs/secrets-store-csi-driver/issues/384
CVE-2020-8567: Plugin directory traversals · Issue #384 · kubernetes-sigs/secrets-store-csi-driver · GitHubPatch;Third Party Advisory
-
https://groups.google.com/g/kubernetes-secrets-store-csi-driver/c/BI2qisiNXHY
CVE-2020-8568 (Medium): Plugin directory traversalsMailing List;Third Party Advisory
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