Vulnerability Details : CVE-2020-8568
Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16 allow an attacker who can modify a SecretProviderClassPodStatus/Status resource the ability to write content to the host filesystem and sync file contents to Kubernetes Secrets. This includes paths under var/lib/kubelet/pods that contain other Kubernetes Secrets.
Vulnerability category: Directory traversalInput validation
Exploit prediction scoring system (EPSS) score for CVE-2020-8568
Probability of exploitation activity in the next 30 days: 0.09%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 36 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-8568
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:N |
6.8
|
4.9
|
NIST |
|
5.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N |
1.3
|
4.0
|
Kubernetes |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
1.2
|
5.2
|
NIST |
CWE ids for CVE-2020-8568
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: jordan@liggitt.net (Secondary)
-
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-2020-8568
-
https://groups.google.com/g/kubernetes-secrets-store-csi-driver/c/Cb9cvymTzl4
CVE-2020-8568 (Medium): Secrets sync/rotate directory traversalMailing List;Patch;Third Party Advisory
-
https://github.com/kubernetes-sigs/secrets-store-csi-driver/issues/378
CVE-2020-8568: Secrets sync/rotate directory traversal · Issue #378 · kubernetes-sigs/secrets-store-csi-driver · GitHubPatch;Third Party Advisory
Products affected by CVE-2020-8568
- cpe:2.3:a:kubernetes:secrets_store_csi_driver:0.0.15:*:*:*:*:*:*:*
- cpe:2.3:a:kubernetes:secrets_store_csi_driver:0.0.16:*:*:*:*:*:*:*