CVE-2018-18397

{"id": "CVE-2018-18397", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2018-12-12T10:29:00.240", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHBA-2019:0327", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2019:0163", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2019:0202", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2019:0324", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2019:0831", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3901-1/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3901-2/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3903-1/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3903-2/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c."}, {"lang": "es", "value": "La implementaci\u00f3n de userfaultfd en el kernel de Linux en versiones anteriores a la 4.17 gestiona de manera incorrecta para ciertas llamadas ioctl UFFDIO_, tal y como queda demostrado al permitir que usuarios locales escriban datos en huecos en un archivo tmpfs (si el usuario tiene acceso de solo lectura a dicho archivo que contiene huecos). Esto est\u00e1 relacionado con fs/userfaultfd.c y mm/userfaultfd.c."}], "lastModified": "2020-08-24T17:37:01.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9F04FA47-B72F-494A-A7C9-64B8A2B42F3D", "versionEndExcluding": "4.19.7"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F87326E-0B56-4356-A889-73D026DB1D4B"}, {"criteria": "cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB28F9AF-3D06-4532-B397-96D7E4792503"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D99A687E-EAE6-417E-A88E-D0082BC194CD"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9EC0D196-F7B8-4BDD-9050-779F7A7FBEE4"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A4E9DD8A-A68B-4A69-8B01-BFF92A2020A8"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF77CDCF-B9C9-427D-B2BF-36650FB2148C"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D5F7E11E-FB34-4467-8919-2B6BEAABF665"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}