Video messaging technology powerhouse Zoom has rolled out a high-priority patch for macOS users alongside a warning that hackers could abuse the software flaw to connect to and control Zoom Apps.
The vulnerability, which carries a CVSS severity score of 7.3/10, is documented as a debugging port misconfiguration that is opened by the Zoom client on macOS machines.
Details from Zoom’s advisory:
Zoom Client for Meetings for macOS (Standard and for IT Admin) starting with 5.10.6 and prior to 5.12.0 contains a debugging port misconfiguration. When camera mode rendering context is enabled as part of the Zoom App Layers API by running certain Zoom Apps, a local debugging port is opened by the Zoom client. A local malicious user could use this debugging port to connect to and control the Zoom Apps running in the Zoom client.
The vulnerability, tracked as CVE-2022-28762, affects Zoom Client for Meetings for macOS (Standard and for IT Admin) starting with 5.10.6 and prior to 5.12.0. The company credited its internal security team with finding the issue.
The Zoom security response team also released a patch for a medium-severity issue affecting the Zoom On-Premise Meeting Connector Multimedia Router (MMR).
The vulnerability (CVE-2022-28761) carries a CVSS score of 6.5 and is described as an improper access control bug.
“Zoom On-Premise Meeting Connector MMR before version 4.8.20220916.131 contains an improper access control vulnerability. As a result, a malicious actor in a meeting or webinar they are authorized to join could prevent participants from receiving audio and video causing meeting disruptions,” the company said in an advisory.