CVE-2025-3831
📋 TL;DR
The Harmony SASE agent may expose sensitive log files uploaded during troubleshooting to unauthorized parties. This information disclosure vulnerability affects organizations using Check Point's Harmony SASE agent for remote access and security. Attackers could potentially access sensitive system information, credentials, or other data contained in these logs.
💻 Affected Systems
- Check Point Harmony SASE Agent
📦 What is this software?
Harmony Sase by Checkpoint
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized access to sensitive log files containing credentials, system information, or proprietary data leading to credential theft, lateral movement, or data exfiltration.
Likely Case
Exposure of system configuration details, user information, or troubleshooting data that could aid attackers in reconnaissance or targeted attacks.
If Mitigated
Limited exposure of non-sensitive troubleshooting information with minimal impact on security posture.
🎯 Exploit Status
Exploitation requires access to the uploaded log storage location; may require some level of access to the environment
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory; refer to vendor documentation
Vendor Advisory: https://support.checkpoint.com/results/sk/sk183761
Restart Required: Yes
Instructions:
1. Access Check Point support portal SK183761. 2. Download latest Harmony SASE agent version. 3. Deploy updated agent to all endpoints. 4. Restart affected systems.
🔧 Temporary Workarounds
Disable troubleshooting log uploads
allPrevent log files from being uploaded during troubleshooting sessions
Check agent configuration settings for troubleshooting options
Restrict access to log storage
allApply strict access controls to directories where uploaded logs are stored
chmod 700 /path/to/logs
set-acl -path 'C:\Logs' -deny 'Everyone'
🧯 If You Can't Patch
- Disable automatic log upload functionality in agent configuration
- Implement strict access controls and monitoring on log storage locations
🔍 How to Verify
Check if Vulnerable:
Check agent version and configuration for troubleshooting upload settingsCheck Version:
harmony-agent --version or check agent GUI/about sectionVerify Fix Applied:
Verify agent version is updated and test log upload functionality📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to log storage locations
- Unexpected file access patterns in log directories
Network Indicators:
- Unusual outbound connections from agent to log storage servers
SIEM Query:
source="harmony-agent" AND (event="log_upload" OR file_access="*.log")