CVE-2021-20426
📋 TL;DR
IBM Security Guardium 11.2 contains hard-coded credentials that could allow attackers to authenticate to the system, communicate with external components, or decrypt internal data. This affects all deployments of IBM Security Guardium 11.2 that haven't been patched. Attackers could gain unauthorized access to sensitive security monitoring data and system controls.
💻 Affected Systems
- IBM Security Guardium
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Guardium system allowing attackers to access all monitored database traffic, modify security policies, disable monitoring, and pivot to connected database systems.
Likely Case
Unauthorized access to sensitive database monitoring data, potential credential theft from monitored systems, and manipulation of security alerts and reports.
If Mitigated
Limited impact if system is isolated, network access is restricted, and additional authentication layers are in place, though hard-coded credentials remain a persistent risk.
🎯 Exploit Status
Hard-coded credentials typically require minimal technical skill to exploit once discovered. No authentication needed if attacker can reach the system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix pack 11.2.0.0-ISS-GUARD-IF0010 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/6455281
Restart Required: Yes
Instructions:
1. Download fix pack 11.2.0.0-ISS-GUARD-IF0010 or later from IBM Fix Central. 2. Backup current configuration. 3. Apply the fix pack following IBM's installation instructions. 4. Restart Guardium services. 5. Verify the fix by checking version and testing authentication.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to Guardium systems to only trusted administrative networks
Use firewall rules to limit inbound connections to Guardium from specific IP ranges only
Additional Authentication Layer
allImplement network-level authentication or VPN requirements before accessing Guardium
Configure VPN gateway or network authentication proxy in front of Guardium
🧯 If You Can't Patch
- Isolate Guardium systems on dedicated network segments with strict firewall rules
- Implement comprehensive monitoring and alerting for any access attempts to Guardium systems
🔍 How to Verify
Check if Vulnerable:
Check if running IBM Security Guardium version 11.2 without fix pack 11.2.0.0-ISS-GUARD-IF0010 appliedCheck Version:
Login to Guardium and check version in administration interface or run guardium version commandVerify Fix Applied:
Verify version shows fix pack 11.2.0.0-ISS-GUARD-IF0010 or later is installed and test that hard-coded credentials no longer work📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful authentication using unexpected credentials
- Unusual access patterns to Guardium systems
- Authentication from unexpected IP addresses or locations
Network Indicators:
- Network traffic to Guardium from unauthorized sources
- Unusual protocol patterns in Guardium communications
SIEM Query:
source="guardium" AND (event_type="authentication" AND result="success") AND NOT user IN ["expected_users"]