CVE-2021-21284

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c", "name": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://docs.docker.com/engine/release-notes/#20103", "name": "https://docs.docker.com/engine/release-notes/#20103", "tags": ["Release Notes", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc", "name": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://github.com/moby/moby/releases/tag/v19.03.15", "name": "https://github.com/moby/moby/releases/tag/v19.03.15", "tags": ["Release Notes", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/moby/moby/releases/tag/v20.10.3", "name": "https://github.com/moby/moby/releases/tag/v20.10.3", "tags": ["Release Notes", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://security.netapp.com/advisory/ntap-20210226-0005/", "name": "https://security.netapp.com/advisory/ntap-20210226-0005/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.debian.org/security/2021/dsa-4865", "name": "DSA-4865", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "https://security.gentoo.org/glsa/202107-23", "name": "GLSA-202107-23", "tags": ["Patch", "Third Party Advisory"], "refsource": "GENTOO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using \"--userns-remap\", if the root user in the remapped namespace has access to the host filesystem they can modify files under \"/var/lib/docker/<remapping>\" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-22"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-21284", "ASSIGNER": "security-advisories@github.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 2.7, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "severity": "LOW", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 5.1, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.3}}, "publishedDate": "2021-02-02T18:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "20.10.3", "versionStartIncluding": "20.0.0"}, {"cpe23Uri": "cpe:2.3:a:docker:docker:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "19.03.15"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "11.60.3", "versionStartIncluding": "11.0.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-04-29T19:22Z"}