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Kubernetes DoS Vulnerability

Moderate severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Sep 28, 2023

Package

gomod k8s.io/kubernetes (Go)

Affected versions

>= 1.0, <= 1.10
>= 1.11.0, <= 1.11.7
>= 1.12.0, <= 1.12.5
>= 1.13.0, <= 1.13.3

Patched versions

1.11.8
1.12.6
1.13.4

Description

In all Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4, users that are authorized to make patch requests to the Kubernetes API Server can send a specially crafted patch of type "json-patch" (e.g. kubectl patch --type json or "Content-Type: application/json-patch+json") that consumes excessive resources while processing, causing a Denial of Service on the API Server.

References

Published by the National Vulnerability Database Apr 1, 2019
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jul 19, 2023
Last updated Sep 28, 2023

Severity

Moderate

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
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

EPSS score

0.277%
(68th percentile)

Weaknesses

CVE ID

CVE-2019-1002100

GHSA ID

GHSA-q4rr-64r9-fwgf

Source code

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