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When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS)."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad de interbloqueo en \"github.com/containers/storage\" en versiones anteriores a 1.28.1. Cuando se procesa una imagen de contenedor, cada capa se desempaqueta usando un \"tar\". Si una de esas capas no es un archivo \"tar\" v\u00e1lido, se produce un error que conlleva a una situaci\u00f3n inesperada en la que el c\u00f3digo espera indefinidamente el flujo desempaquetado de tar, que nunca termina. Un atacante podr\u00eda utilizar esta vulnerabilidad para crear una imagen maliciosa, que cuando una aplicaci\u00f3n la descarga y almacena mediante contenedores y almacenamiento, provocar\u00eda un punto muerto que conducir\u00eda a una Denegaci\u00f3n de Servicio (DoS)."}], "id": "CVE-2021-20291", "lastModified": "2024-11-21T05:46:17.627", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-01T18:15:12.603", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939485"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL/"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X/"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI/"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM/"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://unit42.paloaltonetworks.com/cve-2021-20291/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939485"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://unit42.paloaltonetworks.com/cve-2021-20291/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Aviv Sasson (Palo Alto Networks) for reporting this issue.", "affected_release": [{"advisory": "RHBA-2022:0348", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "container-tools:3.0-8050020220104131412.e34216c9", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-02-01T00:00:00Z"}, {"advisory": "RHSA-2021:4154", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "container-tools:rhel8-8050020210921082437.faa19cc5", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}, {"advisory": "RHSA-2022:7954", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "podman-2:4.2.0-3.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:7955", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "skopeo-2:1.9.2-1.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8008", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "buildah-1:1.27.0-2.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2021:1150", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "cri-o-0:1.20.2-6.rhaos4.7.gitf1d5201.el7", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-04-20T00:00:00Z"}, {"advisory": "RHSA-2021:1150", "cpe": "cpe:/a:redhat:openshift:4.7::el7", "package": "openshift-0:4.7.0-202104090228.p0.git.97111.77863f8.el7", "product_name": "Red Hat OpenShift Container Platform 4.7", "release_date": "2021-04-20T00:00:00Z"}, {"advisory": "RHSA-2021:2438", "cpe": "cpe:/a:redhat:openshift:4.8::el8", "package": "openshift4/ose-docker-builder:v4.8.0-202107152024.p0.git.70b7b95.assembly.stream", "product_name": "Red Hat OpenShift Container Platform 4.8", "release_date": "2021-07-27T00:00:00Z"}], "bugzilla": {"description": "containers/storage: DoS via malicious image", "id": "1939485", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939485"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-667", "details": ["A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).", "A deadlock vulnerability was found in `github.com/containers/storage`. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS)."], "name": "CVE-2021-20291", "package_state": [{"cpe": "cpe:/a:redhat:rhmt:1.2", "fix_state": "Not affected", "package_name": "openshift-migration-plugin-container", "product_name": "Red Hat Cluster Application Migration"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "buildah", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "podman", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "skopeo", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:1.0/buildah", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:1.0/podman", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:1.0/skopeo", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:2.0/buildah", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:2.0/podman", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:2.0/skopeo", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "assisted-installer-container", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "assisted-installer-reporter-container", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "buildah", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/cnf-tests-rhel8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/compliance-rhel8-operator", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/file-integrity-rhel8-operator", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-cluster-node-tuning-operator", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-machine-config-operator", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "skopeo", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:2", "fix_state": "Not affected", "package_name": "virt-cdi-importer-container", "product_name": "Red Hat OpenShift Virtualization 2"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:2", "fix_state": "Not affected", "package_name": "virt-cdi-uploadserver-container", "product_name": "Red Hat OpenShift Virtualization 2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Will not fix", "package_name": "osp-director-provisioner-container", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Will not fix", "package_name": "rhosp-rhel8-tech-preview/osp-director-downloader", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Will not fix", "package_name": "rhosp-rhel8-tech-preview/osp-director-operator", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Not affected", "package_name": "quay/quay-builder-rhel8", "product_name": "Red Hat Quay 3"}], "public_date": "2021-04-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-20291\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20291\nhttps://unit42.paloaltonetworks.com/cve-2021-20291/"], "statement": "The vulnerability was first exposed in v1.23.8 of containers/storage (and subsequently fixed in v1.28.1) with this git commit [1].\n* In OpenShift Container Platform (OCP) only 4.7 contains a version of CRI-O (and openshift/ose-docker-builder) which uses a vulnerable version of containers/storage. Subsequently this has been addressed in OCP 4.7.7.\n* Red Hat Quay quay-builder-container is not affected because it uses a version of github.com/containers/storage earlier than v1.23.8\n* Red Hat Openshift Virtualization is not affected because all containers depending on github.com/containers/storage use a version earlier than v1.23.8\n* For Red Hat OpenStack Platform, because containers/storage is not directly used by the director-operator, no update will be provided at this time for the operator containers.\n[1] - https://github.com/containers/storage/blob/e9989a949a0d2c32fa82d3ff1076e33cfec58cb9/layers.go#L1332", "threat_severity": "Moderate", "upstream_fix": "containers/storage 1.28.1"}