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{}

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To copy files from a container, Kubernetes creates a tar inside the container, 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. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0."}, {"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 crea un alquitr\u00e1n dentro del contenedor, 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. La funci\u00f3n untar puede crear y seguir enlaces simb\u00f3licos. El problema se resuelve en kubectl v1.11.9, v1.12.7, v1.13.5 y v1.14.0."}], "id": "CVE-2019-1002101", "lastModified": "2024-11-21T04:17:42.747", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.8, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 0.5, "impactScore": 5.9, "source": "josh@bress.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-04-01T14:29:00.640", "references": [{"source": "josh@bress.net", "url": "http://www.openwall.com/lists/oss-security/2019/06/21/1"}, {"source": "josh@bress.net", "url": "http://www.openwall.com/lists/oss-security/2019/08/05/5"}, {"source": "josh@bress.net", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107652"}, {"source": "josh@bress.net", "url": "https://access.redhat.com/errata/RHBA-2019:0619"}, {"source": "josh@bress.net", "url": "https://access.redhat.com/errata/RHBA-2019:0620"}, {"source": "josh@bress.net", "url": "https://access.redhat.com/errata/RHBA-2019:0636"}, {"source": "josh@bress.net", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/kubernetes/kubernetes/pull/75037"}, {"source": "josh@bress.net", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPV2RE5RMOGUVP5WJMXKQJZUBBLAFZPZ/"}, {"source": "josh@bress.net", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZB7E3DOZ5WDG46XAIU6K32CXHXPXB2F/"}, {"source": "josh@bress.net", "url": "https://www.twistlock.com/labs-blog/disclosing-directory-traversal-vulnerability-kubernetes-copy-cve-2019-1002101/"}, {"source": "nvd@nist.gov", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/cve-2019-1002101"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2019/06/21/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2019/08/05/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107652"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHBA-2019:0619"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHBA-2019:0620"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHBA-2019:0636"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/kubernetes/kubernetes/pull/75037"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPV2RE5RMOGUVP5WJMXKQJZUBBLAFZPZ/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZB7E3DOZ5WDG46XAIU6K32CXHXPXB2F/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.twistlock.com/labs-blog/disclosing-directory-traversal-vulnerability-kubernetes-copy-cve-2019-1002101/"}], "sourceIdentifier": "josh@bress.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Ariel Zelivansky (Twistlock) for reporting this issue.", "affected_release": [{"advisory": "RHBA-2019:0620", "cpe": "cpe:/a:redhat:openshift:3.10::el7", "package": "atomic-enterprise-service-catalog-1:3.10.127-1.git.55.b54f8c7.el7", "product_name": "Red Hat OpenShift Container Platform 3.10", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0620", "cpe": "cpe:/a:redhat:openshift:3.10::el7", "package": "atomic-openshift-0:3.10.127-1.git.0.dab74c6.el7", "product_name": "Red Hat OpenShift Container Platform 3.10", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0620", "cpe": "cpe:/a:redhat:openshift:3.10::el7", "package": "atomic-openshift-descheduler-0:3.10.127-1.git.153.bc1eddd.el7", "product_name": "Red Hat OpenShift Container Platform 3.10", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0620", "cpe": "cpe:/a:redhat:openshift:3.10::el7", "package": 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"cpe:/a:redhat:openshift:3.11::el7", "package": "atomic-enterprise-service-catalog-1:3.11.98-1.git.0.a7877b0.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "atomic-openshift-0:3.11.98-1.git.0.0cbaff3.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "atomic-openshift-cluster-autoscaler-0:3.11.98-1.git.0.3b82207.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "atomic-openshift-descheduler-0:3.11.98-1.git.153.6c2426d.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", 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{"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "atomic-openshift-web-console-0:3.11.98-1.git.50.bd70c76.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "golang-github-openshift-oauth-proxy-0:3.11.98-1.git.0.fd9716c.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "golang-github-prometheus-alertmanager-0:3.11.98-1.git.92.7ebe477.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2019-04-11T00:00:00Z"}, {"advisory": "RHBA-2019:0636", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "golang-github-prometheus-node_exporter-0:3.11.98-1.git.0.b02f11c.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", 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"RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "ansible-service-broker-0:1.1.20-1.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "atomic-openshift-0:3.9.74-1.git.0.78e56ea.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "atomic-openshift-dockerregistry-0:3.9.74-1.git.0.b102e93.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "atomic-openshift-web-console-0:3.9.74-1.git.50.93129da.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "cri-o-0:1.9.16-1.git78b2041.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "golang-github-prometheus-node_exporter-0:3.9.74-1.git.0.2ab615c.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}, {"advisory": "RHBA-2019:0619", "cpe": "cpe:/a:redhat:openshift:3.9::el7", "package": "openshift-ansible-0:3.9.74-1.git.0.70a0a63.el7", "product_name": "Red Hat OpenShift Container Platform 3.9", "release_date": "2019-04-09T00:00:00Z"}], "bugzilla": {"description": "kubernetes: Mishandling of symlinks allows for arbitrary file write via `kubectl cp`", "id": "1685213", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1685213"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-59", "details": ["The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, 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. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.", "A flaw was found in Kubernetes via the mishandling of symlinks when copying files from a running container. An attacker could exploit this by convincing a user to use `kubectl cp` or `oc cp` with a malicious container, allowing for arbitrary files to be overwritten on the host machine."], "name": "CVE-2019-1002101", "package_state": [{"cpe": "cpe:/a:redhat:openshift:3.4", "fix_state": "Not affected", "package_name": "atomic-openshift", "product_name": "Red Hat OpenShift Container Platform 3.4"}, {"cpe": "cpe:/a:redhat:openshift:3.5", "fix_state": "Not affected", "package_name": "atomic-openshift", "product_name": "Red Hat OpenShift Container Platform 3.5"}, {"cpe": "cpe:/a:redhat:openshift:3.6", "fix_state": "Not affected", "package_name": "atomic-openshift", "product_name": "Red Hat OpenShift Container Platform 3.6"}, {"cpe": "cpe:/a:redhat:openshift:3.7", "fix_state": "Not affected", "package_name": "atomic-openshift", "product_name": "Red Hat OpenShift Container Platform 3.7"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Not affected", "package_name": "heketi", "product_name": "Red Hat Storage 3"}], "public_date": "2019-03-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-1002101\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-1002101\nhttps://discuss.kubernetes.io/t/announce-security-release-of-kubernetes-kubectl-potential-directory-traversal-releases-1-11-9-1-12-7-1-13-5-and-1-14-0-cve-2019-1002101/5712"], "statement": "This issue affects Kubernetes starting from version 1.9. OpenShift Container Platform (OCP) versions 3.9 and later are also affected.\nThis issue did not affect the version of Kubernetes(embedded in heketi) shipped with Red Hat Gluster Storage 3 as it does not contain the vulnerable code.", "threat_severity": "Moderate"}