CVE-2023-20821

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Patch ID: ALPS07937113; Issue ID: ALPS07937113."}], "affected": [{"vendor": "MediaTek, Inc.", "product": "MT2713, MT2735, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6980, MT6983, MT6985, MT6990, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8185, MT8188, MT8195, MT8321, MT8362A, MT8365, MT8385, MT8395, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797", "versions": [{"version": "Android 11.0, 12.0, 13.0 / OpenWrt 1907, 2102 / Yocto 2.6 / RDK-B 22Q3", "status": "affected"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/September-2023"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "Elevation of Privilege"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T09:14:41.174Z"}, "title": "CVE Program Container", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/September-2023", "tags": ["x_transferred"]}]}, {"affected": [{"vendor": "mediatek", "product": "mt2713", "cpes": ["cpe:2.3:h:mediatek:mt2713:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt2735", "cpes": ["cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6833", "cpes": ["cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6835", "cpes": ["cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6853", "cpes": ["cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6855", "cpes": ["cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6873", "cpes": ["cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6875", "cpes": ["cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6877", "cpes": ["cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6879", "cpes": ["cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6880", "cpes": ["cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6883", "cpes": ["cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6885", "cpes": ["cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6886", "cpes": ["cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6889", "cpes": ["cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6890", "cpes": ["cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6891", "cpes": ["cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6893", "cpes": ["cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6895", "cpes": ["cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6980", "cpes": ["cpe:2.3:h:mediatek:mt6980:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6983", "cpes": ["cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6985", "cpes": ["cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt6990", "cpes": ["cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8167", "cpes": ["cpe:2.3:h:mediatek:mt8167:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8167s", "cpes": ["cpe:2.3:h:mediatek:mt8167s:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8168", "cpes": ["cpe:2.3:h:mediatek:mt8168:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8173", "cpes": ["cpe:2.3:h:mediatek:mt8173:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8175", "cpes": ["cpe:2.3:h:mediatek:mt8175:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8185", "cpes": ["cpe:2.3:h:mediatek:mt8185:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8188", "cpes": ["cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8195", "cpes": ["cpe:2.3:h:mediatek:mt8195:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8321", "cpes": ["cpe:2.3:h:mediatek:mt8321:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8362a", "cpes": ["cpe:2.3:h:mediatek:mt8362a:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8365", "cpes": ["cpe:2.3:h:mediatek:mt8365:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", 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"product": "mt8675", "cpes": ["cpe:2.3:h:mediatek:mt8675:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8765", "cpes": ["cpe:2.3:h:mediatek:mt8765:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8766", "cpes": ["cpe:2.3:h:mediatek:mt8766:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8768", "cpes": ["cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8781", "cpes": ["cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8786", "cpes": ["cpe:2.3:h:mediatek:mt8786:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8788", "cpes": ["cpe:2.3:h:mediatek:mt8788:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8789", "cpes": ["cpe:2.3:h:mediatek:mt8789:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8791", "cpes": ["cpe:2.3:h:mediatek:mt8791:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8791t", "cpes": ["cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "mediatek", "product": "mt8797", "cpes": ["cpe:2.3:h:mediatek:mt8797:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}, {"vendor": "google", "product": "android", "cpes": ["cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*", "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "12.0", "status": "affected"}, {"version": "13.0", "status": "affected"}]}], "metrics": [{"cvssV3_1": {"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"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-10-10T17:04:56.340129Z", "id": "CVE-2023-20821", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-10T17:06:16.142Z"}}]}}

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Patch ID: ALPS07937113; Issue ID: ALPS07937113."}], "affected": [{"vendor": "MediaTek, Inc.", "product": "MT2713, MT2735, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6980, MT6983, MT6985, MT6990, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8185, MT8188, MT8195, MT8321, MT8362A, MT8365, MT8385, MT8395, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797", "versions": [{"version": "Android 11.0, 12.0, 13.0 / OpenWrt 1907, 2102 / Yocto 2.6 / RDK-B 22Q3", "status": "affected"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/September-2023"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "Elevation of Privilege"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T09:14:41.174Z"}, "title": "CVE Program 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{"affected": [{"affectedData": [{"product": "MT2713, MT2735, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6980, MT6983, MT6985, MT6990, MT8167, MT8167S, MT8168, MT8173, MT8175, MT8185, MT8188, MT8195, MT8321, MT8362A, MT8365, MT8385, MT8395, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797", "vendor": "MediaTek, Inc.", "versions": [{"status": "affected", "version": "Android 11.0, 12.0, 13.0 / OpenWrt 1907, 2102 / Yocto 2.6 / RDK-B 22Q3"}]}], "source": "security@mediatek.com"}, {"affectedData": [{"cpes": ["cpe:2.3:h:mediatek:mt2713:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "mt2713", "vendor": "mediatek", "versions": [{"lessThanOrEqual": "*", "status": "affected", "version": "0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "mt2735", "vendor": 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This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07937113; Issue ID: ALPS07937113."}, {"lang": "es", "value": "En nvram, existe una posible escritura fuera de l\u00edmites debido a una inexistente comprobaci\u00f3n de l\u00edmites. Esto podr\u00eda llevar a una escalada local de privilegios con necesidad de privilegios de ejecuci\u00f3n del sistema. No es necesaria la interacci\u00f3n del usuario para la explotaci\u00f3n. ID del parche: ALPS07937113; ID de la incidencia: ALPS07937113."}], "id": "CVE-2023-20821", "lastModified": "2026-06-17T05:30:56.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-20821", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-10-10T17:04:56.340129Z", "version": "2.0.3"}}]}, "published": "2023-09-04T03:15:08.480", "references": [{"source": "security@mediatek.com", "tags": ["Vendor Advisory"], "url": "https://corp.mediatek.com/product-security-bulletin/September-2023"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://corp.mediatek.com/product-security-bulletin/September-2023"}], "sourceIdentifier": "security@mediatek.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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