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.
References
Link | Resource |
---|---|
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt | Third Party Advisory |
https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133 | Third Party Advisory |
https://zoom.us/trust/security/security-bulletin | Vendor Advisory |
https://www.youtube.com/watch?v=SonmmgQlLzg | Third Party Advisory |
https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html | Third Party Advisory |
http://seclists.org/fulldisclosure/2021/Mar/48 | Third Party Advisory |
http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html | Third Party Advisory |
Configurations
Information
Published : 2021-03-18 07:15
Updated : 2021-03-26 06:20
NVD link : CVE-2021-28133
Mitre link : CVE-2021-28133
JSON object : View
CWE
CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
Products Affected
zoom
- zoom