CVE-2019-16000 : What You Need to Know
Learn about CVE-2019-16000, a vulnerability in Cisco Umbrella Roaming Client for Windows allowing local attackers to install unauthorized applications. Find mitigation steps and updates here.
Cisco Umbrella Roaming Client for Windows Install Vulnerability
Understanding CVE-2019-16000
This CVE involves a flaw in the automatic update system of the Cisco Umbrella Roaming Client for Windows, allowing a local attacker to install unauthorized applications on a device.
What is CVE-2019-16000?
The vulnerability stems from inadequate verification of the Windows Installer, enabling a logged-in local attacker to bypass security policies and install unauthorized applications by placing a file in a specific location within the Windows file system.
The Impact of CVE-2019-16000
The vulnerability has a CVSS base score of 4.4, with a medium severity rating. It requires high privileges and user interaction but has no availability impact. The attacker can achieve high integrity impact.
Technical Details of CVE-2019-16000
Vulnerability Description
The flaw in the automatic update process of Cisco Umbrella Roaming Client for Windows allows an authenticated local attacker to install unapproved applications on a targeted device due to insufficient verification of the Windows Installer.
Affected Systems and Versions
- Product: Cisco Umbrella Enterprise Roaming Client for Windows
- Vendor: Cisco
- Version: n/a
Exploitation Mechanism
- Attacker needs to be logged in locally
- Place a file in a specific location within the Windows file system
- Bypass established policies and install unauthorized applications
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates from Cisco
- Monitor for any unauthorized application installations
- Restrict local user privileges to minimize the impact of potential attacks
Long-Term Security Practices
- Regularly review and update security policies and configurations
- Conduct security awareness training for users to prevent social engineering attacks
- Implement file integrity monitoring to detect unauthorized changes
Patching and Updates
- Cisco may release patches or updates to address this vulnerability
- Stay informed about security advisories and apply patches promptly