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TI-2021-11981 Aliases CVE-2021-32001

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

Priority LOW 29CWE-311Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-311.

Summary

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.

Why it matters now

EPSS 0.00304 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SUSERancherK3s – v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1—No fix listedCNA
SUSERancherRKE2 – v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1—No fix listedCNA
  • Rancher VendorSUSE Affected K3s – v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1 Fixed in — No fix listed CNA
  • Rancher VendorSUSE Affected RKE2 – v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1 Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:suse:rancher_k3s:1.19.12:*:*:*:*:*:*:*1.19.12VulnerableSUSE
cpe:2.3:a:suse:rancher_k3s:1.20.8:*:*:*:*:*:*:*1.20.8VulnerableSUSE
cpe:2.3:a:suse:rancher_k3s:1.21.2:*:*:*:*:*:*:*1.21.2VulnerableSUSE
cpe:2.3:a:suse:rancher_rke2:1.19.12:*:*:*:*:*:*:*1.19.12VulnerableSUSE
cpe:2.3:a:suse:rancher_rke2:1.20.8:*:*:*:*:*:*:*1.20.8VulnerableSUSE
cpe:2.3:a:suse:rancher_rke2:1.21.2:*:*:*:*:*:*:*1.21.2VulnerableSUSE
  • cpe:2.3:a:suse:rancher_k3s:1.19.12:*:*:*:*:*:*:* Versions 1.19.12 Vulnerable ·SUSE
  • cpe:2.3:a:suse:rancher_k3s:1.20.8:*:*:*:*:*:*:* Versions 1.20.8 Vulnerable ·SUSE
  • cpe:2.3:a:suse:rancher_k3s:1.21.2:*:*:*:*:*:*:* Versions 1.21.2 Vulnerable ·SUSE
  • cpe:2.3:a:suse:rancher_rke2:1.19.12:*:*:*:*:*:*:* Versions 1.19.12 Vulnerable ·SUSE
  • cpe:2.3:a:suse:rancher_rke2:1.20.8:*:*:*:*:*:*:* Versions 1.20.8 Vulnerable ·SUSE
  • cpe:2.3:a:suse:rancher_rke2:1.21.2:*:*:*:*:*:*:* Versions 1.21.2 Vulnerable ·SUSE

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32001

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences