CVE-2021-34409

It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.1 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://explore.zoom.us/en/trust/security/security-bulletin	Vendor Advisory
https://explore.zoom.us/en/trust/security/security-bulletin	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:zoom:meetings::::::macos::*
	cpe:2.3:a:zoom:rooms::::::::
	cpe:2.3:a:zoom:screen_sharing::::::ipados::*
	cpe:2.3:a:zoom:screen_sharing::::::iphone_os::*

History

21 Nov 2024, 06:10

Type	Values Removed	Values Added
References	~~() https://explore.zoom.us/en/trust/security/security-bulletin - Vendor Advisory~~	() https://explore.zoom.us/en/trust/security/security-bulletin - Vendor Advisory

Information

Published : 2021-09-27 14:15

Updated : 2024-11-21 06:10

NVD link : CVE-2021-34409

Mitre link : CVE-2021-34409

CVE.ORG link : CVE-2021-34409

JSON object : View

Products Affected

zoom

screen_sharing
rooms
meetings

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

{"id": "CVE-2021-34409", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "security@zoom.us", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2021-09-27T14:15:08.137", "references": [{"url": "https://explore.zoom.us/en/trust/security/security-bulletin", "tags": ["Vendor Advisory"], "source": "security@zoom.us"}, {"url": "https://explore.zoom.us/en/trust/security/security-bulletin", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-732"}]}], "descriptions": [{"lang": "en", "value": "It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process."}, {"lang": "es", "value": "Se ha detectado que los paquetes de instalaci\u00f3n de Zoom Client for Meetings para MacOS (Standard y para IT Admin) antes de la versi\u00f3n 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad antes de la versi\u00f3n 5.2.0, y Zoom Rooms for Conference antes de la versi\u00f3n 5.1.0, copian scripts de shell previos y posteriores a la instalaci\u00f3n en un directorio escribible por el usuario. En los productos afectados que se enumeran a continuaci\u00f3n, un actor malintencionado con acceso local a la m\u00e1quina de un usuario podr\u00eda utilizar este defecto para ejecutar potencialmente comandos arbitrarios del sistema en un contexto con mayores privilegios durante el proceso de instalaci\u00f3n"}], "lastModified": "2024-11-21T06:10:20.527", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zoom:meetings:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "37C37A72-A64B-4823-B1E1-4EB0B7283629", "versionEndExcluding": "5.2.0"}, {"criteria": "cpe:2.3:a:zoom:rooms:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BA912D24-7983-4F87-B845-7464F24EE239", "versionEndExcluding": "5.1.0"}, {"criteria": "cpe:2.3:a:zoom:screen_sharing:*:*:*:*:*:ipados:*:*", "vulnerable": true, "matchCriteriaId": "7B7ED4B1-5A0F-4738-AC25-46846F3D1127", "versionEndExcluding": "5.2.0"}, {"criteria": "cpe:2.3:a:zoom:screen_sharing:*:*:*:*:*:iphone_os:*:*", "vulnerable": true, "matchCriteriaId": "FC50FFA5-57A1-4E3C-A53B-8B0622A437FA", "versionEndExcluding": "5.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@zoom.us"}