{"containers": {"cna": {"affected": [{"product": "Zoom Client for Meetings for Windows", "vendor": "Zoom Video Communications Inc", "versions": [{"lessThan": "5.5.4", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Laurent Delosieres of ManoMano"}], "datePublic": "2021-11-12T00:00:00", "descriptions": [{"lang": "en", "value": "The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer\u2019s computer."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Improper Verification of Cryptographic Signature", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-12-02T18:20:33", "orgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "shortName": "Zoom"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin"}, {"tags": ["x_refsource_MISC"], "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"}], "source": {"discovery": "USER"}, "title": "Zoom Windows installation executable signature bypass", "x_legacyV4Record": {"CVE_data_meta": {"AKA": "Zoom Communications Inc", "ASSIGNER": "security@zoom.us", "DATE_PUBLIC": "2021-11-12T17:00:00.000Z", "ID": "CVE-2021-34420", "STATE": "PUBLIC", "TITLE": "Zoom Windows installation executable signature bypass"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Zoom Client for Meetings for Windows", "version": {"version_data": [{"version_affected": "<", "version_value": "5.5.4"}]}}]}, "vendor_name": "Zoom Video Communications Inc"}]}}, "credit": [{"lang": "eng", "value": "Laurent Delosieres of ManoMano"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer\u2019s computer."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Improper Verification of Cryptographic Signature"}]}]}, "references": {"reference_data": [{"name": "https://explore.zoom.us/en/trust/security/security-bulletin", "refsource": "MISC", "url": "https://explore.zoom.us/en/trust/security/security-bulletin"}, {"name": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e", "refsource": "MISC", "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"}]}, "source": {"discovery": "USER"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:12:50.184Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"}]}]}, "cveMetadata": {"assignerOrgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "assignerShortName": "Zoom", "cveId": "CVE-2021-34420", "datePublished": "2021-11-11T22:59:18.504250Z", "dateReserved": "2021-06-09T00:00:00", "dateUpdated": "2024-09-16T21:03:43.509Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

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