CVE-2021-28133

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant's screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-03-22T16:06:18.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"}, {"tags": ["x_refsource_MISC"], "url": "https://zoom.us/trust/security/security-bulletin"}, {"tags": ["x_refsource_MISC"], "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"}, {"tags": ["x_refsource_MISC"], "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"}, {"name": "20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2021/Mar/48"}, {"tags": ["x_refsource_MISC"], "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"}, {"tags": ["x_refsource_MISC"], "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-28133", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant's screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt", "refsource": "MISC", "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"}, {"name": "https://zoom.us/trust/security/security-bulletin", "refsource": "MISC", "url": "https://zoom.us/trust/security/security-bulletin"}, {"name": "https://www.youtube.com/watch?v=SonmmgQlLzg", "refsource": "MISC", "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"}, {"name": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133", "refsource": "MISC", "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"}, {"name": "20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2021/Mar/48"}, {"name": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html", "refsource": "MISC", "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"}, {"name": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T21:33:17.446Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://zoom.us/trust/security/security-bulletin"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"}, {"name": "20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2021/Mar/48"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-28133", "datePublished": "2021-03-18T13:59:36.000Z", "dateReserved": "2021-03-10T00:00:00.000Z", "dateUpdated": "2024-08-03T21:33:17.446Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:*:*:*", "matchCriteriaId": "8AE7F07C-3FDD-4D2A-92E6-A9648C83B016", "versionEndIncluding": "5.5.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant's screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue."}, {"lang": "es", "value": "Zoom versiones hasta 5.5.4, a veces permite a atacantes leer informaci\u00f3n privada en la pantalla de un participante, aunque el participante nunca intent\u00f3 compartir la parte privada de su pantalla. Cuando un usuario comparte una ventana de aplicaci\u00f3n espec\u00edfica por medio de la funcionalidad Share Screen, otros participantes de la reuni\u00f3n pueden visualizar brevemente el contenido de otras ventanas de la aplicaci\u00f3n que no se compartieron expl\u00edcitamente. El contenido de estas otras ventanas puede (por ejemplo) verse durante un corto per\u00edodo de tiempo cuando se superponen a la ventana compartida y se enfocan. (Un atacante puede, por supuesto, usar una aplicaci\u00f3n de grabaci\u00f3n de pantalla separada, no compatible con Zoom, para guardar todos esos contenidos para posteriores repeticiones y an\u00e1lisis). Dependiendo de los datos compartidos involuntariamente, esta breve exposici\u00f3n de los contenidos de la pantalla puede ser un problema de seguridad m\u00e1s o menos grave"}], "id": "CVE-2021-28133", "lastModified": "2026-06-17T03:45:51.443", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-18T14:15:14.007", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2021/Mar/48"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://zoom.us/trust/security/security-bulletin"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2021/Mar/48"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://zoom.us/trust/security/security-bulletin"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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