CVE-2021-32001

K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

K3s in SUSE Rancher allows any user with direct access to the datastore, or a copy of a datastore backup, to extract the cluster's confidential keying material (cluster certificate authority private keys, secrets encryption configuration passphrase, etc.) and decrypt it, without having to know the token value. This issue affects: SUSE Rancher K3s version v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1 and prior versions; RKE2 version v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1 and prior versions.

K3s en SUSE Rancher permite a cualquier usuario con acceso directo al almacén de datos, o a una copia de seguridad del almacén de datos, extraer el material de clave confidencial del clúster (claves privadas de la autoridad de certificación del clúster, frase de contraseña de configuración de cifrado de secretos, etc.) y descifrarlo, sin tener que conocer el valor del token. Este problema afecta a: SUSE Rancher K3s versión v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1 y versiones anteriores; RKE2 versión v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1 y versiones anteriores

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-03 CVE Reserved
2021-07-28 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-311: Missing Encryption of Sensitive Data

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.suse.com/show_bug.cgi?id=1188453	2022-11-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Suse Search vendor "Suse"		Rancher K3s Search vendor "Suse" for product "Rancher K3s"				1.19.12 Search vendor "Suse" for product "Rancher K3s" and version "1.19.12"		-		Affected
Suse Search vendor "Suse"		Rancher K3s Search vendor "Suse" for product "Rancher K3s"				1.20.8 Search vendor "Suse" for product "Rancher K3s" and version "1.20.8"		-		Affected
Suse Search vendor "Suse"		Rancher K3s Search vendor "Suse" for product "Rancher K3s"				1.21.2 Search vendor "Suse" for product "Rancher K3s" and version "1.21.2"		-		Affected
Suse Search vendor "Suse"		Rancher Rke2 Search vendor "Suse" for product "Rancher Rke2"				1.19.12 Search vendor "Suse" for product "Rancher Rke2" and version "1.19.12"		-		Affected
Suse Search vendor "Suse"		Rancher Rke2 Search vendor "Suse" for product "Rancher Rke2"				1.20.8 Search vendor "Suse" for product "Rancher Rke2" and version "1.20.8"		-		Affected
Suse Search vendor "Suse"		Rancher Rke2 Search vendor "Suse" for product "Rancher Rke2"				1.21.2 Search vendor "Suse" for product "Rancher Rke2" and version "1.21.2"		-		Affected