OESA-2021-1373

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1373
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2021-1373.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2021-1373
Upstream
Published
2021-09-30T11:03:14Z
Modified
2025-09-03T06:17:19.427826Z
Summary
kubernetes security update
Details

Container cluster management.

Security Fix(es):

A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.(CVE-2021-25737)

A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.(CVE-2021-25735)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:20.03-LTS-SP1 / kubernetes

Package

Name
kubernetes
Purl
pkg:rpm/openEuler/kubernetes&distro=openEuler-20.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.20.2-5.oe1

Ecosystem specific 

{
    "x86_64": [
        "kubernetes-kubeadm-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-client-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-master-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-node-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-help-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-kubelet-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-1.20.2-5.oe1.x86_64.rpm"
    ],
    "src": [
        "kubernetes-1.20.2-5.oe1.src.rpm"
    ],
    "aarch64": [
        "kubernetes-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-kubelet-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-client-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-node-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-master-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-help-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-kubeadm-1.20.2-5.oe1.aarch64.rpm"
    ]
}

openEuler:20.03-LTS-SP2 / kubernetes

Package

Name
kubernetes
Purl
pkg:rpm/openEuler/kubernetes&distro=openEuler-20.03-LTS-SP2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.20.2-5.oe1

Ecosystem specific 

{
    "x86_64": [
        "kubernetes-help-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-kubelet-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-master-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-kubeadm-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-node-1.20.2-5.oe1.x86_64.rpm",
        "kubernetes-client-1.20.2-5.oe1.x86_64.rpm"
    ],
    "src": [
        "kubernetes-1.20.2-5.oe1.src.rpm"
    ],
    "aarch64": [
        "kubernetes-kubeadm-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-kubelet-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-client-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-node-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-help-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-master-1.20.2-5.oe1.aarch64.rpm",
        "kubernetes-1.20.2-5.oe1.aarch64.rpm"
    ]
}