CVE-2021-39076
📋 TL;DR
IBM Security Guardium versions 10.5 and 11.3 use weak cryptographic algorithms that could allow attackers to decrypt sensitive information stored or transmitted by the system. This affects organizations using these Guardium versions for database security monitoring and compliance. The vulnerability stems from inadequate cryptographic strength (CWE-327).
💻 Affected Systems
- IBM Security Guardium
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could decrypt sensitive database audit logs, credentials, or configuration data, leading to data breaches, compliance violations, and lateral movement within the network.
Likely Case
Skilled attackers with access to encrypted data could decrypt sensitive Guardium information, potentially compromising database security monitoring and exposing audit trails.
If Mitigated
With proper network segmentation and access controls, the impact is limited to authorized users who could still exploit weak cryptography if they obtain encrypted data.
🎯 Exploit Status
Exploitation requires access to encrypted data and cryptographic analysis capabilities. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fixes per IBM advisory: Interim Fix for 10.5 (p5) and 11.3 (p1)
Vendor Advisory: https://www.ibm.com/support/pages/node/6572979
Restart Required: Yes
Instructions:
1. Review IBM advisory 2. Download appropriate interim fix 3. Apply fix following IBM instructions 4. Restart Guardium services 5. Verify cryptographic algorithms are strengthened
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to Guardium management interfaces and data stores
Access Control Hardening
allImplement strict authentication and authorization controls for Guardium access
🧯 If You Can't Patch
- Isolate Guardium systems from untrusted networks
- Monitor for unusual access patterns to Guardium data stores
🔍 How to Verify
Check if Vulnerable:
Check Guardium version via web interface or CLI: 'grdapi getVersion'Check Version:
grdapi getVersionVerify Fix Applied:
Verify patch installation via Guardium patch management interface and confirm cryptographic algorithms meet current standards📡 Detection & Monitoring
Log Indicators:
- Unusual access to encrypted data stores
- Failed cryptographic operations
Network Indicators:
- Unexpected connections to Guardium data ports
SIEM Query:
source="guardium" AND (event_type="crypto_error" OR event_type="data_access")