CVE-2021-20418
📋 TL;DR
IBM Security Guardium 11.2 has a weak default password policy that doesn't enforce strong passwords, making user accounts vulnerable to brute-force attacks. This affects all installations using default configurations. Attackers can potentially compromise accounts to access sensitive security monitoring data.
💻 Affected Systems
- IBM Security Guardium
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through administrative account takeover, leading to data exfiltration, privilege escalation, and disabling of security monitoring.
Likely Case
Unauthorized access to user accounts, potential data leakage from security logs, and lateral movement within the network.
If Mitigated
Limited impact with strong password policies and multi-factor authentication in place.
🎯 Exploit Status
Exploitation requires valid user accounts but can use automated password guessing tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply cumulative patch or upgrade to later version
Vendor Advisory: https://www.ibm.com/support/pages/node/6479899
Restart Required: Yes
Instructions:
1. Download the latest cumulative patch from IBM Fix Central. 2. Apply the patch following IBM's installation guide. 3. Restart Guardium services. 4. Verify password policy enforcement is enabled.
🔧 Temporary Workarounds
Enable Strong Password Policy
allManually configure password complexity requirements in Guardium settings
Navigate to Guardium UI > Configuration > Security Settings > Password Policy
Enable minimum length 12 characters, complexity requirements, and account lockout
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Guardium management interfaces
- Enable multi-factor authentication for all Guardium user accounts
🔍 How to Verify
Check if Vulnerable:
Check if password policy is enabled in Guardium configuration and verify minimum requirements are enforced.Check Version:
gdp_ver (run from Guardium command line)Verify Fix Applied:
Attempt to create a weak password in Guardium user management - system should reject it.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from single source
- Successful logins from unusual locations/times
- Password policy violation warnings
Network Indicators:
- Brute-force patterns to Guardium web interface
- Unusual authentication traffic to Guardium ports
SIEM Query:
source="guardium" AND (event_type="failed_login" count>10 within 5min OR event_type="password_policy_violation")