{"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":"2021-11-12T00:00:00.000Z","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’s 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":"2021-12-02T18:20:33.000Z","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’s 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":"2021-11-11T22:59:18.504Z","dateReserved":"2021-06-09T00:00:00.000Z","dateUpdated":"2024-09-16T21:03:43.509Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}