{ "id": "CVE-2021-1104", "sourceIdentifier": "psirt@nvidia.com", "published": "2021-08-13T16:15:07.153", "lastModified": "2024-11-21T05:43:36.313", "vulnStatus": "Modified", "cveTags": [], "descriptions": [ { "lang": "en", "value": "The RISC-V Instruction Set Manual contains a documented ambiguity for the Machine Trap Vector Base Address (MTVEC) register that may lead to a vulnerability due to the initial state of the register not being defined, potentially leading to information disclosure, data tampering and denial of service." }, { "lang": "es", "value": "El manual del conjunto de instrucciones de RISC-V, contiene una ambig\u00fcedad documentada para el registro Machine Trap Vector Base Address (MTVEC), que puede conllevar a una vulnerabilidad debido a al estado inicial del registro no est\u00e1 definido, conllevando potencialmente a una divulgaci\u00f3n de informaci\u00f3n, manipulaci\u00f3n de datos y una denegaci\u00f3n de servicio." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "baseScore": 7.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL" }, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "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:a:risc-v:instruction_set_manual:*:*:*:*:*:*:*:*", "matchCriteriaId": "6204F3BC-6E18-4322-9A3A-3E34FBA19D24" } ] } ] } ], "references": [ { "url": "https://riscv.org/news/2021/08/video-glitching-risc-v-chips-mtvec-corruption-for-hardening-isa-adam-zabrocki-and-alex-matrosov-def-con-29/", "source": "psirt@nvidia.com", "tags": [ "Exploit", "Vendor Advisory" ] }, { "url": "https://riscv.org/news/2021/08/video-glitching-risc-v-chips-mtvec-corruption-for-hardening-isa-adam-zabrocki-and-alex-matrosov-def-con-29/", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Exploit", "Vendor Advisory" ] } ] }