{"id": "CVE-2021-21556", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}, {"type": "Secondary", "source": "security_alert@emc.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 0.6}]}, "published": "2021-06-14T19:15:08.353", "references": [{"url": "https://www.dell.com/support/kbdoc/000187958", "tags": ["Vendor Advisory"], "source": "security_alert@emc.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}, {"type": "Secondary", "source": "security_alert@emc.com", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS contain a stack-based buffer overflow vulnerability in systems with NVDIMM-N installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment."}, {"lang": "es", "value": "Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, y T640 Server BIOS contienen una vulnerabilidad de desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en sistemas con NVDIMM-N instalados. Un usuario local malicioso con privilegios elevados puede explotar potencialmente esta vulnerabilidad, conllevando a una denegaci\u00f3n de servicio, una ejecuci\u00f3n de c\u00f3digo arbitrario o una divulgaci\u00f3n de informaci\u00f3n en UEFI o BIOS Preboot Environment"}], "lastModified": "2021-06-23T18:03:50.980", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r640_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6D7153C-E15D-4041-B45F-207DEB0B13AE", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r640:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "81416C16-D7FA-4165-BB0E-6458A4EA5AEE"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r740_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4502AE6D-BA6B-46AA-A214-99143272BA70", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r740:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DE562535-3D9B-4A82-AC0D-6A2225E63E8D"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r740xd_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3798FD8A-8A44-49F3-83E0-FD3D541DBCC2", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r740xd:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "868ECD3F-77CD-4F5D-86E5-61689E4C5BA0"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r940_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CD596C2D-BA27-4ED0-BCF4-F9792AD3E358", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r940:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B581E1DE-4E94-49E5-B5CF-2A94B2570708"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r840_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9E8EDAF7-4C73-49F5-840A-A3E3DD4ED72D", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r840:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E058B9C6-CD1C-42F5-8781-05450254E9E5"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_r940xa_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F96E70D7-502B-42B9-8C50-30B685CC0E9E", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_r940xa:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "3D143853-3D62-4AD7-B899-F726036A34D2"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_t640_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2AE262A-7389-4CB1-8A76-7B723563BEF6", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_t640:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1DEC0235-DDA1-4EE4-B3F8-512F1B29AFC6"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_mx740c_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6552B1DC-BA56-42BC-AC35-374C764F256E", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_mx740c:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "757039D5-60B9-40B0-B719-38E27409BDDE"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dell:poweredge_mx840c_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24D97615-28EC-4484-8E1E-BFB8EABE3284", "versionEndExcluding": "2.11.2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dell:poweredge_mx840c:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E4305D0F-CB59-49D5-8D21-8ECC3342C36C"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security_alert@emc.com"}
