CVE-2021-32001— K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token
Quick assessment
Affected
SUSE Rancher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
SUSE Rancher K3s是德国SUSE公司的个 CNCF 沙箱项目，提供轻量级但功能强大的认证 Kubernetes 发行版。 SUSE Rancher K3s存在安全漏洞，该漏洞允许任何用户直接访问数据存储，或数据存储备份的副本，以提取集群的机密密钥材料(集群证书颁发机构私钥、秘密加密配置密码短语等)并解密，不需要知道令牌的值。
Possible ATT&CK Techniques 1 AI
T1552.004 · Private Keys
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-32001
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据加密缺失
Source: CVE Program / CVE List V5
Vulnerability Title
SUSE Rancher K3s 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE Rancher K3s是德国SUSE公司的个 CNCF 沙箱项目，提供轻量级但功能强大的认证 Kubernetes 发行版。 SUSE Rancher K3s存在安全漏洞，该漏洞允许任何用户直接访问数据存储，或数据存储备份的副本，以提取集群的机密密钥材料(集群证书颁发机构私钥、秘密加密配置密码短语等)并解密，不需要知道令牌的值。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-32001
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-32001
请登录查看更多情报信息。
Vendor Advisories for CVE-2021-32001 (1)
IV. Related Vulnerabilities
Same product: Rancher
-
CVE-2026-88804
Unauthenticated update of public UI settings leading to stor -
CVE-2026-88805
Session Not Revoked Server-Side on Logout in Rancher -
CVE-2026-88808
Fleet agent copies downstream resources with cluster-admin p -
CVE-2026-93540
Fleet applies namespace labels and annotations without the b -
CVE-2026-93539
Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook
Same vendor: SUSE
-
CVE-2026-88804
Unauthenticated update of public UI settings leading to stor -
CVE-2026-88805
Session Not Revoked Server-Side on Logout in Rancher -
CVE-2026-88808
Fleet agent copies downstream resources with cluster-admin p -
CVE-2026-93540
Fleet applies namespace labels and annotations without the b -
CVE-2026-93539
Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook
Same weakness: CWE-311
-
CVE-2026-105179
SourceCodester Drug Recommendation System Password add_user. -
CVE-2026-92757
Malformed connection string may disable field level encrypti -
CVE-2026-92756
Combining encryption settings may disable encryption -
CVE-2026-81688
openssl_encrypt before 1.4.9 Plaintext Confirmation Oracle v -
CVE-2026-81681
openssl_encrypt before 1.4.9 False Encryption via Cleartext
V. Comments for CVE-2021-32001
No comments yet