{ "id": "CVE-2021-29631", "sourceIdentifier": "secteam@freebsd.org", "published": "2021-08-30T18:15:08.923", "lastModified": "2021-12-14T21:37:46.300", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "In FreeBSD 13.0-STABLE before n246941-20f96f215562, 12.2-STABLE before r370400, 11.4-STABLE before r370399, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, certain VirtIO-based device models in bhyve failed to handle errors when fetching I/O descriptors. A malicious guest may cause the device model to operate on uninitialized I/O vectors leading to memory corruption, crashing of the bhyve process, and possibly arbitrary code execution in the bhyve process." }, { "lang": "es", "value": "En FreeBSD versiones 13.0-STABLE anteriores a n246941-20f96f215562, 12.2-STABLE anteriores a r370400, 11.4-STABLE anteriores a r370399, 13.0-RELEASE anteriores a p4, 12.2-RELEASE anteriores a p10, y 11.4-RELEASE anteriores a p13, determinados modelos de dispositivos basados en VirtIO en bhyve presentaban un fallo al manejar los errores cuando se obten\u00edan descriptores de E/S. Un hu\u00e9sped malicioso puede causar al modelo de dispositivo operar en vectores de E/S no inicializados, conllevando a una corrupci\u00f3n de la memoria, un bloqueo del proceso bhyve y, posiblemente, una ejecuci\u00f3n de c\u00f3digo arbitrario en el proceso bhyve." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 7.2 }, "baseSeverity": "HIGH", "exploitabilityScore": 3.9, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-908" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*", "matchCriteriaId": "4A865EA1-01D7-4E5A-9D13-80780F8A9D7A" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*", "matchCriteriaId": "9FCA6A72-2A72-45FD-A43D-B5BF7C329121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p10:*:*:*:*:*:*", "matchCriteriaId": "C1E296FC-EFF0-4F78-9481-DF24A94279D5" }, { 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"cpe:2.3:o:freebsd:freebsd:12.2:p8:*:*:*:*:*:*", "matchCriteriaId": "562CEDBA-8BAE-4886-8AA3-AFF8E7F5A9C6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p9:*:*:*:*:*:*", "matchCriteriaId": "37283D43-72DD-4FF9-BDBC-61B92051084B" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:-:*:*:*:*:*:*", "matchCriteriaId": "174265E7-6B73-4546-B4C7-3826C7EB5624" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:*", "matchCriteriaId": "04A0E266-714C-4753-A652-A51F25582C78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:*", "matchCriteriaId": "556111A1-C236-4DF6-9438-F9C874451A58" }, { "vulnerable": true, "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:*", "matchCriteriaId": "1673F16B-463A-492C-B66F-48917008F7F5" } ] } ] } ], "references": [ { "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:13.bhyve.asc", "source": "secteam@freebsd.org", "tags": [ "Vendor Advisory" ] }, { "url": "https://security.netapp.com/advisory/ntap-20210923-0004/", "source": "secteam@freebsd.org", "tags": [ "Third Party Advisory" ] } ] }