CVE-2021-34413 Race condition in Zoom Plugin for Microsoft Outlook for MacOS

High 7.5 Published Updated

A race condition in the Zoom Outlook plugin for macOS allows local attackers to execute malicious code with elevated privileges during installation.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-34413?

CVE-2021-34413 is a high-severity vulnerability in Zoom Plugin for Microsoft Outlook for MacOS, published on 27 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

All versions of the Zoom Plugin for Microsoft Outlook for MacOS before 5.3.52553.0918 contain a Time-of-check Time-of-use (TOC/TOU) vulnerability during the plugin installation process. This could allow a standard user to write their own malicious application to the plugin directory, allowing the malicious application to execute in a privileged context.

Weakness: CWE-367

Which versions are affected by CVE-2021-34413?

It affects 1 product.

Products include Zoom Zoom Plugin for Microsoft Outlook.

How do I fix CVE-2021-34413?

No fix has been published for CVE-2021-34413 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-34413 being exploited?

There is no known exploitation of CVE-2021-34413 in the wild and no public exploit code.

Sources

Also known as GHSA-mgjc-79v8-mc48.

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