CVE-2020-8551

Kubernetes kubelet denial of service

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Kubelet component in versions 1.15.0-1.15.9, 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 the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250.

Se detectó que el componente Kubelet en versiones 1.15.0-1.15.9, versiones 1.16.0-1.16.6 y versiones 1.17.0-1.17.2, es vulnerable a un ataque de denegación de servicio por medio la API de kubelet, incluyendo la API de solo lectura HTTP no autenticada típicamente servida en el puerto 10255, y la API HTTPS autenticada típicamente servida en el puerto 10250.

A denial of service flaw was found in Kubernetes' Kubelet API. A remote attacker can exploit this flaw by sending repeated, crafted HTTP requests to exhaust available memory and cause a crash.

*Credits: Henrik Schmidt

CVSS Scores

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-02-03 CVE Reserved
2020-03-27 CVE Published
2024-01-15 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling
CWE-789: Memory Allocation with Excessive Size Value

CAPEC

References (6)

URL	Tag	Source
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/2UOlsba2g0s	X_refsource_misc
https://security.netapp.com/advisory/ntap-20200413-0003	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/kubernetes/kubernetes/issues/89377	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-8551	2020-04-08
https://bugzilla.redhat.com/show_bug.cgi?id=1816403	2020-04-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.15.0 <= 1.15.9 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.15.0 <= 1.15.9"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.16.0 <= 1.16.6 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.16.0 <= 1.16.6"		-		Affected
Kubernetes Search vendor "Kubernetes"		Kubernetes Search vendor "Kubernetes" for product "Kubernetes"				>= 1.17.0 <= 1.17.2 Search vendor "Kubernetes" for product "Kubernetes" and version " >= 1.17.0 <= 1.17.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected