CVE-2019-4702
📋 TL;DR
IBM Security Guardium Data Encryption (GDE) 3.0.0.2 has incorrect permission settings on security-critical resources, allowing unauthorized actors to read or modify sensitive data. This affects organizations using the vulnerable version of IBM GDE for data encryption management. The vulnerability stems from improper access controls (CWE-732) that could expose encryption keys or configuration data.
💻 Affected Systems
- IBM Security Guardium Data Encryption
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative access to the encryption system, allowing them to decrypt protected data, modify encryption policies, or disable encryption entirely.
Likely Case
Unauthorized users access sensitive configuration files or encryption metadata, potentially leading to data exposure or system compromise.
If Mitigated
With proper network segmentation and access controls, impact is limited to authorized users within the security perimeter.
🎯 Exploit Status
Exploitation requires some level of access to the system. No public exploit code has been released.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix from IBM Security Bulletin
Vendor Advisory: https://www.ibm.com/support/pages/node/6403331
Restart Required: Yes
Instructions:
1. Download the fix from IBM Fix Central. 2. Apply the fix according to IBM documentation. 3. Restart the GDE services. 4. Verify the fix is applied correctly.
🔧 Temporary Workarounds
Restrict File Permissions
allManually review and tighten permissions on GDE configuration files and directories
Review chmod settings on GDE installation directories
Set appropriate ownership and permissions for GDE files
Network Segmentation
allIsolate GDE systems from untrusted networks and users
Implement firewall rules to restrict access to GDE management interfaces
Use VLAN segmentation for GDE systems
🧯 If You Can't Patch
- Implement strict access controls and least privilege principles for all GDE users
- Monitor GDE systems for unauthorized access attempts and file permission changes
🔍 How to Verify
Check if Vulnerable:
Check GDE version via administration console or configuration files. Version 3.0.0.2 is vulnerable.Check Version:
Check GDE administration interface or consult GDE documentation for version checkingVerify Fix Applied:
Verify version has been updated and check file permissions on critical GDE resources📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to GDE configuration files
- Permission changes on GDE system files
- Unexpected process access to GDE resources
Network Indicators:
- Unusual network traffic to GDE management ports
- Access from unauthorized IP addresses to GDE interfaces
SIEM Query:
source="gde_logs" AND (event_type="file_access" OR event_type="permission_change") AND user NOT IN authorized_users