CVE-2021-28133

Description

Zoom through 5.5.4 sometimes allows attackers to read private information on a participants 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.

Risk Information

Base Score

4.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS Score

Exploitation Probability

4.872

Associated Vulnerability

Vulnerability	OS Platform
Vulnerability CVE-2020-6109,CVE-2020-6110,CVE-2021-28133 are affected in Zoom 4.6.10	Windows
Vulnerabilities CVE-2020-9767,CVE-2021-28133 are fixed in Zoom (x64) 5.0.4	Windows
Vulnerabilities CVE-2020-9767,CVE-2021-28133 are fixed in Zoom 5.0.4	Windows

Patch Details

Click to see the patches provided by ManageEngine for this CVE

Patch ID	Patch Description
PATCH-343207	Zoom Workplace (6.2.10.50536)
PATCH-333974	Zoom (x64) (5.16.6.24712)
PATCH-333973	Zoom (5.16.6.24712)

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234