gsd-2018-18397
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
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.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2018-18397", "description": "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.", "id": "GSD-2018-18397", "references": [ "https://www.suse.com/security/cve/CVE-2018-18397.html", "https://access.redhat.com/errata/RHSA-2019:0831", "https://access.redhat.com/errata/RHSA-2019:0324", "https://access.redhat.com/errata/RHSA-2019:0202", "https://access.redhat.com/errata/RHSA-2019:0163", "https://ubuntu.com/security/CVE-2018-18397", "https://advisories.mageia.org/CVE-2018-18397.html", "https://linux.oracle.com/cve/CVE-2018-18397.html", "https://packetstormsecurity.com/files/cve/CVE-2018-18397" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2018-18397" ], "details": "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.", "id": "GSD-2018-18397", "modified": "2023-12-13T01:22:35.913797Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-18397", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "n/a", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "USN-3903-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3903-2/" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87" }, { "name": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1", "refsource": "MISC", "url": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1" }, { "name": "USN-3901-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3901-2/" }, { "name": "RHSA-2019:0324", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2019:0324" }, { "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700", "refsource": "MISC", "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700" }, { "name": "RHSA-2019:0202", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2019:0202" }, { "name": "RHSA-2019:0163", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2019:0163" }, { "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1", "refsource": "MISC", "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7" }, { "name": "USN-3901-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3901-1/" }, { "name": "USN-3903-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3903-1/" }, { "name": "RHSA-2019:0831", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2019:0831" }, { "name": "RHBA-2019:0327", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHBA-2019:0327" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "4.19.7", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-18397" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-863" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7", "refsource": "MISC", "tags": [ "Patch", "Vendor Advisory" ], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87", "refsource": "MISC", "tags": [ "Patch", "Vendor Advisory" ], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87" }, { "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700", "refsource": "MISC", "tags": [ "Exploit", "Issue Tracking", "Third Party Advisory" ], "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1700" }, { "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1" }, { "name": "RHSA-2019:0202", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2019:0202" }, { "name": "RHSA-2019:0163", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2019:0163" }, { "name": "RHSA-2019:0324", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2019:0324" }, { "name": "USN-3901-2", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3901-2/" }, { "name": "USN-3901-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3901-1/" }, { "name": "USN-3903-2", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3903-2/" }, { "name": "USN-3903-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3903-1/" }, { "name": "RHSA-2019:0831", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2019:0831" }, { "name": "RHBA-2019:0327", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHBA-2019:0327" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "LOW", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.0" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } }, "lastModifiedDate": "2020-08-24T17:37Z", "publishedDate": "2018-12-12T10:29Z" } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.