CVE-2020-8561

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-8561
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.

4.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

4.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:P/I:N/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References
Link Resource
https://github.com/kubernetes/kubernetes/issues/104720 Mitigation Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY Mailing List Mitigation
https://security.netapp.com/advisory/ntap-20211014-0002/ Third Party Advisory
https://github.com/kubernetes/kubernetes/issues/104720 Mitigation Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY Mailing List Mitigation
https://security.netapp.com/advisory/ntap-20211014-0002/ Third Party Advisory
Configurations

Configuration 1 (hide)

OR 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:-:*:*:*:*:*:*
History

21 Nov 2024, 05:39

Type Values Removed Values Added
References () https://github.com/kubernetes/kubernetes/issues/104720 - Mitigation, Third Party Advisory () https://github.com/kubernetes/kubernetes/issues/104720 - Mitigation, Third Party Advisory
References () https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY - Mailing List, Mitigation () https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY - Mailing List, Mitigation
References () https://security.netapp.com/advisory/ntap-20211014-0002/ - Third Party Advisory () https://security.netapp.com/advisory/ntap-20211014-0002/ - Third Party Advisory

14 Oct 2021, 09:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20211014-0002/ -

01 Oct 2021, 19:15

Type Values Removed Values Added
CPE cpe:2.3:a:kubernetes:kubernetes:1.21.5:-:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.20.11:-:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.22.2:-:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 4.0
v3 : 4.1
CWE CWE-610
References (CONFIRM) https://github.com/kubernetes/kubernetes/issues/104720 - (CONFIRM) https://github.com/kubernetes/kubernetes/issues/104720 - Mitigation, Third Party Advisory
References (MLIST) https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY - (MLIST) https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY - Mailing List, Mitigation

20 Sep 2021, 17:21

Type Values Removed Values Added
New CVE
Information

Published : 2021-09-20 17:15

Updated : 2024-11-21 05:39

NVD link : CVE-2020-8561

Mitre link : CVE-2020-8561

CVE.ORG link : CVE-2020-8561

JSON object : View

Products Affected

kubernetes

  • kubernetes
CWE
CWE-441

Unintended Proxy or Intermediary ('Confused Deputy')

CWE-610

Externally Controlled Reference to a Resource in Another Sphere