CVE-2022-28766 Explained : Impact and Mitigation

DLL injection vulnerability in Zoom Windows Clients

Understanding CVE-2022-28766

This CVE identifies a DLL injection vulnerability in Windows 32-bit versions of the Zoom Client for Meetings and Zoom Rooms for Conference Room, allowing a local low-privileged user to execute arbitrary code.

What is CVE-2022-28766?

The vulnerability in Zoom Windows Clients allows an attacker to inject dynamic-link libraries and run malicious code through a low-privileged user account.

The Impact of CVE-2022-28766

If exploited, this vulnerability could lead to the execution of unauthorized code within the context of the Zoom client, potentially compromising the confidentiality of data.

Technical Details of CVE-2022-28766

Vulnerability Description

The DLL injection vulnerability affects the Zoom Client for Meetings and Zoom Rooms for Conference Room on Windows 32-bit systems, prior to version 5.12.6.

Affected Systems and Versions

Vendor: Zoom Video Communications Inc.
Products Affected:
Zoom Client for Meetings for Windows (32-bit)
Zoom VDI Windows Meeting Client for Windows (32-bit)
Zoom Rooms for Conference Room for Windows (32-bit)
Vulnerable Versions: Less than 5.12.6

Exploitation Mechanism

To exploit this vulnerability, an attacker would need local access and a low-privileged user account on the targeted system. By injecting malicious DLLs, the attacker can execute unauthorized code.

Mitigation and Prevention

Immediate Steps to Take

Update the Zoom Client for Meetings and Zoom Rooms for Conference Room to version 5.12.6 or later to mitigate the vulnerability.
Restrict access to vulnerable systems to trusted users only.

Long-Term Security Practices

Implement least privilege access controls and regular security updates to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates from Zoom and apply them promptly to ensure the protection of your systems.