cve-2021-21284
Vulnerability from cvelistv5
Published
2021-02-02 17:55
Modified
2024-08-03 18:09
Severity ?
EPSS score ?
Summary
privilege escalation in Moby
References
▼ | URL | Tags | |
---|---|---|---|
security-advisories@github.com | https://docs.docker.com/engine/release-notes/#20103 | Release Notes, Vendor Advisory | |
security-advisories@github.com | https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c | Patch, Third Party Advisory | |
security-advisories@github.com | https://github.com/moby/moby/releases/tag/v19.03.15 | Release Notes, Third Party Advisory | |
security-advisories@github.com | https://github.com/moby/moby/releases/tag/v20.10.3 | Release Notes, Third Party Advisory | |
security-advisories@github.com | https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc | Third Party Advisory | |
security-advisories@github.com | https://security.gentoo.org/glsa/202107-23 | Patch, Third Party Advisory | |
security-advisories@github.com | https://security.netapp.com/advisory/ntap-20210226-0005/ | Third Party Advisory | |
security-advisories@github.com | https://www.debian.org/security/2021/dsa-4865 | Third Party Advisory |
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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/\u003cremapping\u003e\" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-07-10T04:06:25", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://docs.docker.com/engine/release-notes/#20103" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/moby/moby/releases/tag/v20.10.3" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/moby/moby/releases/tag/v19.03.15" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://security.netapp.com/advisory/ntap-20210226-0005/" }, { "name": "DSA-4865", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2021/dsa-4865" }, { "name": "GLSA-202107-23", "tags": [ "vendor-advisory", "x_refsource_GENTOO" ], "url": "https://security.gentoo.org/glsa/202107-23" } ], "source": { "advisory": "GHSA-7452-xqpj-6rpc", "discovery": "UNKNOWN" }, "title": "privilege escalation in Moby", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21284", "STATE": "PUBLIC", "TITLE": "privilege escalation in Moby" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "moby", "version": { "version_data": [ { "version_value": "\u003c 19.03.15" }, { "version_value": "\u003e= 20.0.0, \u003c 20.10.3" } ] } } ] }, "vendor_name": "moby" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "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/\u003cremapping\u003e\" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user." } ] }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)" } ] } ] }, "references": { "reference_data": [ { "name": "https://docs.docker.com/engine/release-notes/#20103", "refsource": "MISC", "url": "https://docs.docker.com/engine/release-notes/#20103" }, { "name": "https://github.com/moby/moby/releases/tag/v20.10.3", "refsource": "MISC", "url": "https://github.com/moby/moby/releases/tag/v20.10.3" }, { "name": "https://github.com/moby/moby/releases/tag/v19.03.15", "refsource": "MISC", "url": "https://github.com/moby/moby/releases/tag/v19.03.15" }, { "name": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc", "refsource": "CONFIRM", "url": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc" }, { "name": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c", "refsource": "MISC", "url": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c" }, { "name": "https://security.netapp.com/advisory/ntap-20210226-0005/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20210226-0005/" }, { "name": "DSA-4865", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2021/dsa-4865" }, { "name": "GLSA-202107-23", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202107-23" } ] }, "source": { "advisory": "GHSA-7452-xqpj-6rpc", "discovery": "UNKNOWN" } } } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21284", "datePublished": "2021-02-02T17:55:22", "dateReserved": "2020-12-22T00:00:00", "dateUpdated": "2024-08-03T18:09:15.042Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-21284\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2021-02-02T18:15:11.827\",\"lastModified\":\"2022-04-29T19:22:01.677\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"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. 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- 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.