CVE-2023-52338
📋 TL;DR
This CVE describes a link following vulnerability in Trend Micro Deep Security 20.0 and Cloud One - Endpoint and Workload Security Agent that allows local attackers to escalate privileges. Attackers must first execute low-privileged code on the target system to exploit this vulnerability. Organizations using affected Trend Micro security products are at risk.
💻 Affected Systems
- Trend Micro Deep Security
- Trend Micro Cloud One - Endpoint and Workload Security Agent
📦 What is this software?
Deep Security by Trendmicro
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains full system administrator privileges, enabling complete system compromise, data theft, and persistence.
Likely Case
Local attacker elevates from standard user to SYSTEM/root privileges, allowing installation of malware, disabling security controls, and lateral movement.
If Mitigated
With proper access controls and monitoring, impact is limited to isolated systems with rapid detection and containment.
🎯 Exploit Status
Requires attacker to first execute low-privileged code on target system. Link following vulnerability suggests manipulation of symbolic links or junctions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://success.trendmicro.com/dcx/s/solution/000296337?language=en_US
Restart Required: Yes
Instructions:
1. Review Trend Micro advisory 000296337. 2. Update affected Trend Micro agents to latest version. 3. Restart systems or services as required. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict local user privileges
allLimit local user accounts to minimum necessary privileges to reduce attack surface
Implement application whitelisting
allPrevent execution of unauthorized binaries that could provide initial foothold
🧯 If You Can't Patch
- Implement strict access controls to limit who can execute code on affected systems
- Deploy enhanced monitoring for privilege escalation attempts and unusual process behavior
🔍 How to Verify
Check if Vulnerable:
Check Trend Micro agent version against affected versions listed in advisory 000296337Check Version:
On Windows: Check Trend Micro agent in Programs and Features. On Linux: Check package manager or agent status command.Verify Fix Applied:
Verify agent version is updated beyond vulnerable versions and check for successful patch installation logs📡 Detection & Monitoring
Log Indicators:
- Unusual process creation with elevated privileges
- Trend Micro agent service restarts or failures
- Symbolic link creation in protected directories
Network Indicators:
- None - this is a local attack
SIEM Query:
Process creation events where parent process is Trend Micro agent and child process has elevated privileges