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.
CVSS Rating: 4.7 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N (Medium)

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.

### Am I vulnerable?
If Ceph RBD volumes are in use and kube-controller-manager is using a log level of at least 4.

#### Affected Versions
kubernetes v1.19.0 - v1.19.2
kubernetes v1.18.0 - v1.18.9
kubernetes v1.17.0 - v1.17.12

### How do I mitigate this vulnerability?
Do not enable verbose logging in production, limit access to logs.

#### Fixed Versions
v1.19.3
v1.18.10
v1.17.13

To upgrade, refer to the documentation: https://kubernetes.io/docs/tasks/administer-cluster/cluster-management/#upgrading-a-cluster

### Acknowledgements
This vulnerability was reported by: Kaizhe Huang (derek0405)

/area security
/kind bug
/committee product-security

CVE-2020-8566: Ceph RBD adminSecrets exposed in logs when loglevel >= 4
This is a GitHub Issue
repo:kubernetes
owner:kubernetes
Title : CVE-2020-8566: Ceph RBD adminSecrets exposed in logs when loglevel >= 4
Issue date:

--- start body ---
CVSS Rating: 4.7 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N (Medium)

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.

### Am I vulnerable?
If Ceph RBD volumes are in use and kube-controller-manager is using a log level of at least 4.

#### Affected Versions
kubernetes v1.19.0 - v1.19.2
kubernetes v1.18.0 - v1.18.9
kubernetes v1.17.0 - v1.17.12

### How do I mitigate this vulnerability?
Do not enable verbose logging in production, limit access to logs.

#### Fixed Versions
v1.19.3
v1.18.10
v1.17.13

To upgrade, refer to the documentation: https://kubernetes.io/docs/tasks/administer-cluster/cluster-management/#upgrading-a-cluster

### Acknowledgements
This vulnerability was reported by: Kaizhe Huang (derek0405)

/area security
/kind bug
/committee product-security

--- end body ---

In Kubernetes clusters using Ceph RBD as a storage provisioner, sensitive admin secrets can be exposed in logs when the logging level is set to 4 or higher. This vulnerability affects specific versions of Kubernetes and can lead to unauthorized access to sensitive information if logs are not properly secured.