CVE-2024-0819
📋 TL;DR
This vulnerability allows low-privileged users on systems running vulnerable TeamViewer Remote Client versions to elevate privileges by changing personal password settings and establishing remote connections to logged-in administrator accounts. It affects TeamViewer users on Windows, Linux, and macOS who haven't updated to the patched version.
💻 Affected Systems
- TeamViewer Remote Client
📦 What is this software?
Remote by Teamviewer
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where an attacker gains administrative control over the system, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation allowing unauthorized access to sensitive files, system configuration changes, or installation of additional malware.
If Mitigated
Limited impact with proper access controls, monitoring, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires local access and knowledge of the vulnerability. No public exploit code has been released as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 15.51.5 and later
Vendor Advisory: https://www.teamviewer.com/en/trust-center/security-bulletins/tv-2024-1001/
Restart Required: Yes
Instructions:
1. Open TeamViewer application. 2. Go to Help > Check for new version. 3. Follow the update prompts to install version 15.51.5 or later. 4. Restart the application or system as required.
🔧 Temporary Workarounds
Disable TeamViewer Personal Password Feature
allTemporarily disable the personal password feature that's being exploited for privilege escalation.
Not applicable - requires GUI configuration
Restrict Local User Access
allLimit local user accounts to only trusted personnel and implement strict access controls.
🧯 If You Can't Patch
- Implement strict principle of least privilege for all local user accounts
- Monitor for unusual TeamViewer connection attempts and privilege escalation activities
🔍 How to Verify
Check if Vulnerable:
Check TeamViewer version in application settings or via 'teamviewer --version' command on Linux/macOS.Check Version:
teamviewer --versionVerify Fix Applied:
Confirm version is 15.51.5 or higher and test that personal password changes don't allow unauthorized admin connections.📡 Detection & Monitoring
Log Indicators:
- Unexpected TeamViewer personal password changes
- Unusual remote connections from local user accounts
- Privilege escalation attempts in system logs
Network Indicators:
- Suspicious TeamViewer connection patterns
- Unexpected outbound connections from TeamViewer process
SIEM Query:
source="TeamViewer" AND (event="password_change" OR event="connection_established") | stats count by user, dest_ip