CVE-2021-25736

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-25736
Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.

5.8 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.3 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/kubernetes/kubernetes/pull/99958 Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20231221-0003/
https://github.com/kubernetes/kubernetes/pull/99958 Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20231221-0003/
Configurations

Configuration 1 (hide)

AND
OR cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
History

13 Feb 2025, 17:15

Type Values Removed Values Added
Summary (en) Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected. (en) Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.

21 Nov 2024, 05:55

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 6.3 		v2 : unknown
v3 : 5.8
References () https://github.com/kubernetes/kubernetes/pull/99958 - Third Party Advisory () https://github.com/kubernetes/kubernetes/pull/99958 - Third Party Advisory
References () https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ - Mailing List, Third Party Advisory () https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ - Mailing List, Third Party Advisory
References () https://security.netapp.com/advisory/ntap-20231221-0003/ - () https://security.netapp.com/advisory/ntap-20231221-0003/ -

21 Dec 2023, 22:15

Type Values Removed Values Added
References
  • () https://security.netapp.com/advisory/ntap-20231221-0003/ -

16 Nov 2023, 16:01

Type Values Removed Values Added
CPE cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
First Time Microsoft
Kubernetes kubernetes
Kubernetes
Microsoft windows
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.3
References (MISC) https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ - (MISC) https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ - Mailing List, Third Party Advisory
References (MISC) https://github.com/kubernetes/kubernetes/pull/99958 - (MISC) https://github.com/kubernetes/kubernetes/pull/99958 - Third Party Advisory

30 Oct 2023, 03:15

Type Values Removed Values Added
New CVE
Information

Published : 2023-10-30 03:15

Updated : 2025-02-13 17:15

NVD link : CVE-2021-25736

Mitre link : CVE-2021-25736

CVE.ORG link : CVE-2021-25736

JSON object : View

Products Affected

kubernetes

  • kubernetes

microsoft

  • windows
CWE
NVD-CWE-noinfo