CVE-2020-8566

Ceph RBD adminSecrets exposed in logs when loglevel >= 4

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. This affects < v1.19.3, < v1.18.10, < v1.17.13.

En los clústeres de Kubernetes que usan Ceph RBD como aprovisionador de almacenamiento, con un nivel de registro de al menos 4, los secretos de administración de Ceph RBD se pueden escribir en los registros. Esto ocurre en los registros de kube-controller-manager durante el aprovisionamiento de notificaciones persistentes de Ceph RBD. Esto afecta a versiones anteriores a v1.19.3, anteriores a v1.18.10, anteriores a v1.17.13

A flaw was found in kubernetes. If the logging level is to at least 4, and Ceph RBD is configured as a storage provisioner, then Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims.

*Credits: Kaizhe Huang (derek0405)

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-02-03 CVE Reserved
2020-12-07 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-117: Improper Output Neutralization for Logs
CWE-532: Insertion of Sensitive Information into Log File

CAPEC

References (5)

URL	Tag	Source
https://github.com/kubernetes/kubernetes/issues/95624	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0006	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJ	2021-03-29

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2020-8566	2021-01-18
https://bugzilla.redhat.com/show_bug.cgi?id=1886640	2021-01-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.17.0 < 1.17.13 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.17.0 < 1.17.13"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.18.0 < 1.18.10 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.18.0 < 1.18.10"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.19.0 < 1.19.3 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.19.0 < 1.19.3"		-		Affected