Show plain JSON{"containers": {"cna": {"affected": [{"product": "Shiftfs in the Linux kernel", "vendor": "Ubuntu", "versions": [{"changes": [{"at": "5.3.0-22.24", "status": "unaffected"}], "lessThan": "5.3 kernel*", "status": "affected", "version": "5.3.0-11.12", "versionType": "custom"}, {"lessThan": "5.0.0-35.38", "status": "affected", "version": "5.0 kernel", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Jann Horn of Google Project Zero"}], "datePublic": "2019-11-12T00:00:00", "descriptions": [{"lang": "en", "value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-538", "description": "CWE-538 File and Directory Information Exposure", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-04-23T23:55:24", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://usn.ubuntu.com/usn/usn-4183-1"}, {"tags": ["x_refsource_MISC"], "url": "https://usn.ubuntu.com/usn/usn-4184-1"}, {"tags": ["x_refsource_MISC"], "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"}], "source": {"defect": ["https://bugs.launchpad.net/bugs/1850867"], "discovery": "EXTERNAL"}, "title": "Mishandling of file-system uid/gid with namespaces in shiftfs", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@ubuntu.com", "DATE_PUBLIC": "2019-11-12 18:00:00 UTC", "ID": "CVE-2019-15793", "STATE": "PUBLIC", "TITLE": "Mishandling of file-system uid/gid with namespaces in shiftfs"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Shiftfs in the Linux kernel", "version": {"version_data": [{"version_affected": ">=", "version_name": "5.3 kernel", "version_value": "5.3.0-11.12"}, {"version_affected": "<", "version_name": "5.3 kernel", "version_value": "5.3.0-22.24"}, {"version_affected": "<", "version_name": "5.0 kernel", "version_value": "5.0.0-35.38"}]}}]}, "vendor_name": "Ubuntu"}]}}, "credit": [{"lang": "eng", "value": "Jann Horn of Google Project Zero"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-538 File and Directory Information Exposure"}]}]}, "references": {"reference_data": [{"name": "https://usn.ubuntu.com/usn/usn-4183-1", "refsource": "MISC", "url": "https://usn.ubuntu.com/usn/usn-4183-1"}, {"name": "https://usn.ubuntu.com/usn/usn-4184-1", "refsource": "MISC", "url": "https://usn.ubuntu.com/usn/usn-4184-1"}, {"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb", "refsource": "MISC", "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"}]}, "source": {"defect": ["https://bugs.launchpad.net/bugs/1850867"], "discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T00:56:22.425Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://usn.ubuntu.com/usn/usn-4183-1"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://usn.ubuntu.com/usn/usn-4184-1"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"}]}]}, "cveMetadata": {"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "assignerShortName": "canonical", "cveId": "CVE-2019-15793", "datePublished": "2020-04-23T23:55:24.581625Z", "dateReserved": "2019-08-29T00:00:00", "dateUpdated": "2024-09-16T16:58:57.384Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}