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Access Restriction Bypass in kubernetes

High severity GitHub Reviewed Published Feb 15, 2022 to the GitHub Advisory Database • Updated Oct 2, 2023

Package

gomod github.com/kubernetes/kubernetes (Go)

Affected versions

<= 1.2.0-alpha.5

Patched versions

1.2.0-alpha.6

Description

The API server in Kubernetes does not properly check admission control, which allows remote authenticated users to access additional resources via a crafted patched object.

Specific Go Packages Affected

github.com/kubernetes/kubernetes/pkg/apiserver

References

Published by the National Vulnerability Database Feb 3, 2016
Reviewed May 7, 2021
Published to the GitHub Advisory Database Feb 15, 2022
Last updated Oct 2, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

EPSS score

0.089%
(40th percentile)

Weaknesses

CVE ID

CVE-2016-1905

GHSA ID

GHSA-xx8c-m748-xr4j

Source code

No known source code
This advisory has been edited. See History.
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