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Kubernetes API Server DoS Via API Requests

Moderate severity GitHub Reviewed Published Feb 15, 2022 to the GitHub Advisory Database • Updated Sep 20, 2023

Package

gomod k8s.io/apiserver (Go)

Affected versions

< 0.15.10
>= 0.16.0, < 0.16.7
>= 0.17.0, < 0.17.3

Patched versions

0.15.10
0.16.7
0.17.3

Description

The Kubernetes API server component in Kubernetes versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.

References

Published by the National Vulnerability Database Mar 27, 2020
Reviewed May 6, 2021
Published to the GitHub Advisory Database Feb 15, 2022
Last updated Sep 20, 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
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.166%
(54th percentile)

Weaknesses

CVE ID

CVE-2020-8552

GHSA ID

GHSA-82hx-w2r5-c2wq

Source code

No known source code

Credits

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