CVE-2021-20401
📋 TL;DR
IBM QRadar SIEM versions 7.3 and 7.4 contain hard-coded credentials that could allow attackers to authenticate to the system, communicate with external components, or decrypt internal data. This affects organizations running these specific QRadar versions. The vulnerability stems from using static passwords or cryptographic keys instead of secure authentication mechanisms.
💻 Affected Systems
- IBM QRadar SIEM
📦 What is this software?
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
Qradar Security Information And Event Manager by Ibm
View all CVEs affecting Qradar Security Information And Event Manager →
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attackers to access sensitive security data, manipulate SIEM alerts, pivot to other systems, and maintain persistent access.
Likely Case
Unauthorized access to QRadar data and configuration, potential data exfiltration, and privilege escalation within the SIEM environment.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external access to QRadar interfaces.
🎯 Exploit Status
Exploitation requires knowledge of the hard-coded credentials, which may be discovered through reverse engineering or other means.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply security patch as specified in IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6449682
Restart Required: Yes
Instructions:
1. Review IBM advisory 6449682. 2. Download appropriate patch from IBM Fix Central. 3. Apply patch following IBM documentation. 4. Restart QRadar services. 5. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict network access to QRadar management interfaces to trusted IPs only
iptables -A INPUT -p tcp --dport 443 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit QRadar interface exposure
- Monitor for unusual authentication attempts and access patterns to QRadar systems
🔍 How to Verify
Check if Vulnerable:
Check QRadar version via Admin interface or command: /opt/qradar/bin/qradar_manage -vCheck Version:
/opt/qradar/bin/qradar_manage -vVerify Fix Applied:
Verify patch application via IBM Fix Central verification or check version after patch📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns to QRadar
- Access from unexpected IP addresses
- Configuration changes without proper authorization
Network Indicators:
- Unexpected connections to QRadar management ports (443, 22)
- Traffic patterns suggesting credential brute-forcing
SIEM Query:
source="qradar" AND (event="Authentication" OR event="Login") AND result="failure" | stats count by src_ip