CVE-2021-25741

A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

CVSS v3 8.1 HIGH
CVSS v2.0 5.5 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:N

Exploitability : 8.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/kubernetes/kubernetes/issues/104980	Mitigation Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s	Mailing List Mitigation
https://security.netapp.com/advisory/ntap-20211008-0006/	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:kubernetes:kubernetes::::::::
	cpe:2.3:a:kubernetes:kubernetes::::::::
	cpe:2.3:a:kubernetes:kubernetes::::::::
	cpe:2.3:a:kubernetes:kubernetes::::::::

History

No history.

Information

Published : 2021-09-20 17:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-25741

Mitre link : CVE-2021-25741

CVE.ORG link : CVE-2021-25741

JSON object : View

Products Affected

kubernetes

kubernetes

CWE

CWE-552

Files or Directories Accessible to External Parties

CWE-20

Improper Input Validation

{"id": "CVE-2021-25741", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "jordan@liggitt.net", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2021-09-20T17:15:08.343", "references": [{"url": "https://github.com/kubernetes/kubernetes/issues/104980", "tags": ["Mitigation", "Third Party Advisory"], "source": "jordan@liggitt.net"}, {"url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s", "tags": ["Mailing List", "Mitigation"], "source": "jordan@liggitt.net"}, {"url": "https://security.netapp.com/advisory/ntap-20211008-0006/", "tags": ["Third Party Advisory"], "source": "jordan@liggitt.net"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-552"}]}, {"type": "Secondary", "source": "jordan@liggitt.net", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem."}, {"lang": "es", "value": "Se ha detectado un problema de seguridad en Kubernetes en el que un usuario puede ser capaz de crear un contenedor con montajes de volumen de sub-ruta para acceder a archivos y directorios fuera del volumen, incluso en el sistema de archivos del host"}], "lastModified": "2021-11-30T22:42:34.020", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "294F8F39-19EC-48D3-8013-C35B7E3076B5", "versionEndIncluding": "1.19.14"}, {"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "816775F6-5488-47BB-8080-DF5D12D14C69", "versionEndIncluding": "1.20.10", "versionStartIncluding": "1.20.0"}, {"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A62C3A55-B83B-42E1-B6B1-E7395D2DB930", "versionEndIncluding": "1.21.4", "versionStartIncluding": "1.21.0"}, {"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6683F913-E546-4C97-A5E7-09FB6FDB0D37", "versionEndIncluding": "1.22.1", "versionStartIncluding": "1.22.0"}], "operator": "OR"}]}], "sourceIdentifier": "jordan@liggitt.net"}