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Vulnerability Details : CVE-2021-28133

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.
Publish Date : 2021-03-18 Last Update Date : 2021-03-26
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID 200

- Products Affected By CVE-2021-28133

# Product Type Vendor Product Version Update Edition Language
1 Application Zoom Zoom * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Zoom Zoom 1

- References For CVE-2021-28133

http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html
http://seclists.org/fulldisclosure/2021/Mar/48
FULLDISC 20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)
https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html
https://www.youtube.com/watch?v=SonmmgQlLzg
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt
https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133
https://zoom.us/trust/security/security-bulletin

- Metasploit Modules Related To CVE-2021-28133

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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