CVE-2019-11249 (GCVE-0-2019-11249)

Vulnerability from cvelistv5 – Published: 2019-08-29 00:26 – Updated: 2024-09-16 18:19
VLAI?
Title
kubectl cp allows symlink directory traversal
Summary
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.
Severity ?
4.8 (Medium)
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
Kubernetes Kubernetes Affected: prior to 1.13.9
Affected: prior to 1.14.5
Affected: prior to 1.15.2
Affected: 1.1
Affected: 1.2
Affected: 1.4
Affected: 1.5
Affected: 1.6
Affected: 1.7
Affected: 1.8
Affected: 1.9
Affected: 1.10
Affected: 1.11
Affected: 1.12
Create a notification for this product.
Date Public ?
2019-08-05 00:00
Credits
Yang Yang, Amazon
Show details on NVD website
To clipboard 

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      "published": "2019-08-29T01:15:11.443",
      "references": "[{\"url\": \"https://access.redhat.com/errata/RHBA-2019:2794\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHBA-2019:2816\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHBA-2019:2824\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3239\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3811\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/kubernetes/kubernetes/issues/80984\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmtFQAJ\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190919-0003/\", \"source\": \"jordan@liggitt.net\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHBA-2019:2794\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHBA-2019:2816\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHBA-2019:2824\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3239\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:3811\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/kubernetes/kubernetes/issues/80984\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmtFQAJ\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190919-0003/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "jordan@liggitt.net",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"jordan@liggitt.net\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-61\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-22\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-11249\",\"sourceIdentifier\":\"jordan@liggitt.net\",\"published\":\"2019-08-29T01:15:11.443\",\"lastModified\":\"2024-11-21T04:20:48.223\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user\u2019s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user\u2019s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.\"},{\"lang\":\"es\",\"value\":\"El comando kubectl cp permite copiar archivos entre contenedores y la m\u00e1quina del usuario. Para copiar archivos de un contenedor, Kubernetes ejecuta tar dentro del contenedor para crear un archivo tar, lo copia a trav\u00e9s de la red y kubectl lo descomprime en la m\u00e1quina del usuario. Si el binario tar en el contenedor es malicioso, podr\u00eda ejecutar cualquier c\u00f3digo y generar resultados inesperados y maliciosos. Un atacante podr\u00eda usar esto para escribir archivos en cualquier ruta en la m\u00e1quina del usuario cuando se llama a kubectl cp, limitado solo por los permisos del sistema del usuario local. Las versiones afectadas de Kubernetes incluyen versiones anteriores a la versi\u00f3n 1.13.9, versiones anteriores a la versi\u00f3n  1.14.5, versiones anteriores a la versi\u00f3n  1.15.2 y versiones 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12 .\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV30\":[{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:P\",\"baseScore\":5.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-61\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-22\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.0.0\",\"versionEndIncluding\":\"1.12.10\",\"matchCriteriaId\":\"ABCFC052-EAAD-4964-8B50-1D8A04A73D75\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.13.0\",\"versionEndExcluding\":\"1.13.9\",\"matchCriteriaId\":\"14126DA1-4F03-43D3-BD14-0BE06EC8F4E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.14.0\",\"versionEndExcluding\":\"1.14.5\",\"matchCriteriaId\":\"E10D117F-F0C4-4355-98E3-BB4A401258DE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.15.0\",\"versionEndExcluding\":\"1.15.2\",\"matchCriteriaId\":\"2BECD4DB-0E6B-4C4A-B714-F6E4724BD0F6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:1.12.11:beta0:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EAFE32A-5295-4A4B-9EC1-A1DB3CAE3DC8\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:3.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"309CB6F8-F178-454C-BE97-787F78647C28\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:3.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DBCD38F-BBE8-488C-A8C3-5782F191D915\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2F87326E-0B56-4356-A889-73D026DB1D4B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"064E7BDD-4EF0-4A0D-A38D-8C75BAFEDCEF\"}]}]}],\"references\":[{\"url\":\"https://access.redhat.com/errata/RHBA-2019:2794\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Third 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Advisory\"]},{\"url\":\"https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmtFQAJ\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20190919-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.