SB2023071175 - Multiple vulnerabilities in Zoom Rooms for Windows

Description

This security bulletin contains information about 3 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2023-36538)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A local user can bypass implemented security restrictions and gain unauthorized access to the application.

2) Untrusted search path (CVE-ID: CVE-2023-36536)

CWE-ID: CWE-426 - Untrusted Search Path

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted search path. A local user can place a malicious library file into a specific location on the system and execute arbitrary code with elevated privileges.

3) Incorrect default permissions (CVE-ID: CVE-2023-34119)

CWE-ID: CWE-276 - Incorrect Default Permissions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for temporary files. A local user with access to the system can view contents of files and directories or modify them.

Remediation

Install update from vendor's website.

References

• https://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23024
• https://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23022
• https://explore.zoom.us/en/trust/security/security-bulletin/#ZSB-23021