K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token
Published Jul 28, 2021
6.5
MEDIUMCVSS 3.1
EPSS 0.30%
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.
Affected products
-
- Version K3sStatusaffectedConstraints<=v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1
- Version RKE2StatusaffectedConstraints<=v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- 1.19.12
- 1.20.8
- 1.21.2
- 1.19.12
- 1.20.8
- 1.21.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.30% (0.00304) | 21.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00304) | 21.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00113) | 27.50th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.68th | v3 (v2023.03.01) |
| Jun 6, 2024 | 0.06% (0.00060) | 25.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Jul 29, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://bugzilla.suse.com/show_bug.cgi?id=1188453 Issue TrackingVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1188453 | Issue TrackingVendor Advisory |
Change history (0)
No recorded changes yet.