CVE-2020-8561

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

20/09/2021

Last modified:

06/11/2021

Description

A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.10 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

4.10

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:S/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0

4.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:kubernetes:kubernetes:1.20.11:-::::::
cpe:2.3:a:kubernetes:kubernetes:1.21.5:-::::::
cpe:2.3:a:kubernetes:kubernetes:1.22.2:-::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2020-8561

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools