CVE-2022-28751 Explained : Impact and Mitigation

A vulnerability has been discovered in the Zoom Client for Meetings for MacOS that could allow a local low-privileged user to escalate their privileges to root. This vulnerability exists in versions earlier than 5.11.3, posing a significant security risk.

Understanding CVE-2022-28751

This section dives deep into the nature of the vulnerability and its impact on the affected systems.

What is CVE-2022-28751?

The Zoom Client for Meetings for MacOS versions below 5.11.3 is prone to a vulnerability related to package signature validation during the update process. Exploitation of this flaw could empower a low-privileged user to elevate their privileges to root.

The Impact of CVE-2022-28751

With a CVSS base score of 8.8 and high severity ratings across confidentiality, integrity, and availability impact categories, this CVE poses a substantial threat to affected systems.

Technical Details of CVE-2022-28751

This section delves into the specific technical aspects related to the vulnerability.

Vulnerability Description

The issue stems from improper package signature validation, creating an avenue for privilege escalation by unauthorized local users.

Affected Systems and Versions

The vulnerability affects Zoom Client for Meetings for MacOS versions prior to 5.11.3, leaving them susceptible to exploitation.

Exploitation Mechanism

By manipulating the update process's package signature validation, a local low-privileged user could potentially gain elevated system privileges.

Mitigation and Prevention

In this section, we discuss the steps to mitigate the risks associated with CVE-2022-28751.

Immediate Steps to Take

Users are strongly advised to update their Zoom Client for Meetings for MacOS to version 5.11.3 or later to patch the vulnerability and prevent exploitation.

Long-Term Security Practices

Implementing the principle of least privilege, regularly monitoring for unauthorized access, and ensuring timely software updates are crucial for overall system security.

Patching and Updates

Stay informed about security bulletins and promptly apply vendor-provided patches to address known vulnerabilities and enhance system security.