K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token
CVE-2021-32001

6.5MEDIUM

Key Information:

Vendor

Suse
Status
Rancher
Vendor
CVE Published:
28 July 2021

What is CVE-2021-32001?

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.

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Affected Version(s)

Rancher K3s

Rancher RKE2

References

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

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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