Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-28133 |
CWE-ID | N/A |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Zoom Client for Windows Client/Desktop applications / Office applications Zoom Client for Linux Client/Desktop applications / Office applications |
Vendor | Zoom Video Communications, Inc. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU51622
Risk: Low
CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-28133
CWE-ID: N/A
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists within the screen lock functionality due to the way the Zoom client for Windows and Linux handles screen sharing. 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.
Install update from vendor's website.
Vulnerable software versionsZoom Client for Windows: 5.0.0 23168.0427 - 5.5.4 13142.0301
Zoom Client for Linux: 5.1.418436.0628 - 5.5.2 7011.0206
External linkshttp://seclists.org/fulldisclosure/2021/Mar/48
http://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html
http://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt
http://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133
http://www.youtube.com/watch?v=SonmmgQlLzg
http://zoom.us/trust/security/security-bulletin
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.