CVE-2025-62002
📋 TL;DR
This vulnerability in BullWall Ransomware Containment allows authenticated attackers to bypass detection by encrypting a single file when detection thresholds are configured to require multiple file changes. Affected users are those running vulnerable versions of BullWall Ransomware Containment with threshold-based detection enabled.
💻 Affected Systems
- BullWall Ransomware Containment
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could encrypt critical single files (e.g., large databases, configuration files) without triggering ransomware detection, potentially causing significant operational disruption or data loss.
Likely Case
An attacker with valid credentials could encrypt important individual files to disrupt operations or extort payment, bypassing the security product's detection mechanism.
If Mitigated
With proper threshold configuration and monitoring, the impact is limited as the attack would be detected through other security controls or when attempting to encrypt multiple files.
🎯 Exploit Status
Exploitation requires authenticated access to the BullWall system and knowledge of the threshold configuration. The attack technique is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with BullWall vendor for patched versions
Vendor Advisory: https://www.cve.org/CVERecord?id=CVE-2025-62002
Restart Required: Yes
Instructions:
1. Contact BullWall support for patched version. 2. Backup current configuration. 3. Install the updated version. 4. Restart the BullWall service. 5. Verify detection thresholds are properly configured.
🔧 Temporary Workarounds
Configure single-file detection threshold
windowsSet detection threshold to trigger on single file modifications instead of multiple files
Configure via BullWall management interface: Set 'File Modification Threshold' to 1
Implement additional file integrity monitoring
allDeploy complementary file integrity monitoring solutions to detect single-file encryption attempts
🧯 If You Can't Patch
- Configure detection thresholds to trigger on single file modifications (set threshold to 1)
- Implement strict access controls and monitoring for BullWall administrative interfaces
🔍 How to Verify
Check if Vulnerable:
Check BullWall version and verify if detection threshold is set to require multiple file modificationsCheck Version:
Check BullWall management interface or consult system documentation for version informationVerify Fix Applied:
Verify updated version is installed and test that single file encryption attempts trigger detection📡 Detection & Monitoring
Log Indicators:
- Failed or successful authentication to BullWall interface from unusual sources
- Configuration changes to detection thresholds
- Single large file encryption events without BullWall alerts
Network Indicators:
- Unusual authentication traffic to BullWall management ports
- Unexpected configuration changes via management protocols
SIEM Query:
source="bullwall" AND (event_type="config_change" OR auth_failure=true) OR (file_encryption_event=true AND alert_triggered=false)