CVE-2020-4177
📋 TL;DR
IBM Security Guardium 11.1 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 11.1 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 potentially pivot to other systems in the environment.
Likely Case
Unauthorized access to sensitive database monitoring data, potential credential theft from monitored systems, and ability to modify or disable security controls.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external access to Guardium interfaces.
🎯 Exploit Status
Hard-coded credentials typically require minimal technical skill to exploit once discovered.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade to a fixed version as specified in IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6218970
Restart Required: Yes
Instructions:
1. Review IBM advisory at https://www.ibm.com/support/pages/node/6218970
2. Apply the interim fix provided by IBM
3. Restart Guardium services
4. Verify the fix by checking that hard-coded credentials are no longer present
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Guardium management interfaces to only authorized administrative systems
Access Control Lists
allImplement strict firewall rules to limit which IP addresses can connect to Guardium services
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Guardium from untrusted networks
- Monitor Guardium access logs for unauthorized authentication attempts and unusual activity
🔍 How to Verify
Check if Vulnerable:
Check if running Guardium version 11.1 without the IBM-provided fixCheck Version:
Check Guardium version through the web interface or using Guardium CLI commandsVerify Fix Applied:
Verify that the interim fix from IBM has been applied and test that hard-coded credentials no longer work📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful authentication using default credentials
- Unusual access patterns to Guardium interfaces
Network Indicators:
- Unexpected connections to Guardium management ports from unauthorized sources
SIEM Query:
source="guardium" AND (event_type="authentication" AND result="success") AND user="[default_user]"