CVE-2021-32001

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

State: Published
Severity: 6.5 Medium
Published: Jul 28, 2021
Updated: Sep 16, 2024
Reserved: May 3, 2021

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	suse

Weaknesses

CWE-311 Missing Encryption of Sensitive Data

Affected Products

Product	Versions
RancherSUSE	K3s through v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1Affected
RancherSUSE	RKE2 through v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1Affected

References

https://bugzilla.suse.com/show_bug.cgi?id=1188453

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