Home/CVE/In Kubernetes, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files.
CVE

CVE-2020-8565

In Kubernetes, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files.

In Kubernetes, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files. This can occur both in API server logs and client tool output like kubectl. This affects <= v1.19.3, <= v1.18.10, <= v1.17.13, < v1.20.0-alpha2.

MEDIUM · CVSS 4.7 EPSS 0.0006
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-532Insertion of Sensitive Information into Log File
CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

3
kubernetes>= 1.17.0 and <= 1.17.13
kubernetes>= 1.18.0 and <= 1.18.10
kubernetes>= 1.19.0 and <= 1.19.3
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go k8s.io/client-go MODERATE fixed in 0.19.6
Go k8s.io/kubernetes MODERATE fixed in 1.20.0-alpha.2
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumKubernetes Events Deleted
productmediumKubernetes Admission Controller Modification
productmediumKubernetes CronJob/Job Modification
productmediumKubernetes Potential Enumeration Activity
productmediumKubernetes Secrets Modified or Deleted
productmediumKubernetes Rolebinding Modification
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · jordan@liggitt.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Dec 2020 · 10:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

6
msrcCVE-2020-8565
rhsaRHSA-2021:5086Moderate
rhsaRHSA-2021:5085Moderate
rhsaRHBA-2021:3003Moderate
rhsaRHSA-2021:2041Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/kubernetes/kubernetes/issues/95623Third Party Advisory
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJMailing ListPatchThird Party Advisory
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