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ubuntucveUbuntu.comUB:CVE-2021-25735
HistorySep 06, 2021 - 12:00 a.m.

CVE-2021-25735

2021-09-0600:00:00
ubuntu.com
ubuntu.com
8

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

5.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

28.9%

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.

Notes

Author Note
leosilva kubernates is in fact a kubernetes installer that calls snap, not the package it self.
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchkubernetes<ย anyUNKNOWN
ubuntu22.04noarchkubernetes<ย anyUNKNOWN
ubuntu23.10noarchkubernetes<ย anyUNKNOWN

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

5.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

28.9%