CVE-2021-33907 Code injection in Zoom Client for Meetings for Windows
Attackers can execute arbitrary code with elevated privileges by exploiting improper certificate validation during Zoom client updates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33907?
CVE-2021-33907 is a critical code injection vulnerability in Zoom Client for Meetings for Windows, published on 27 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Zoom Client for Meetings for Windows in all versions before 5.3.0 fails to properly validate the certificate information used to sign .msi files when performing an update of the client. This could lead to remote code execution in an elevated privileged context.
Weakness: CWE-295
Which versions are affected by CVE-2021-33907?
It affects 1 product.
Products include Zoom Meetings.
How do I fix CVE-2021-33907?
No fix has been published for CVE-2021-33907 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-33907 being exploited?
There is no known exploitation of CVE-2021-33907 in the wild and no public exploit code.
Other vulnerabilities in Zoom Client for Meetings for Windows
- CVE-2022-28768 Local Privilege Escalation in Zoom Client Installer for macOS
- CVE-2022-28763 Improper URL parsing in Zoom Clients
- CVE-2022-28757 Local Privilege Escalation in Auto Updater for Zoom Client for Meetings for macOS
- CVE-2022-28751 Local Privilege Escalation in Zoom Client for Meetings for MacOS
- CVE-2022-28756 Local Privilege Escalation in Auto Updater for Zoom Client for Meetings for macOS
Sources
Also known as GHSA-f38f-hqfr-4qj5.