CVE-2020-4979
📋 TL;DR
CVE-2020-4979 is a critical vulnerability in IBM QRadar SIEM that allows attackers to execute arbitrary commands by compromising or spoofing inter-host communication. This affects organizations using IBM QRadar SIEM versions 7.3 and 7.4, potentially giving attackers full control over affected systems.
💻 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
Complete system compromise leading to data exfiltration, lateral movement across the network, and potential ransomware deployment.
Likely Case
Unauthorized command execution allowing attackers to manipulate QRadar data, disable security monitoring, or establish persistence.
If Mitigated
Limited impact if network segmentation and strict access controls prevent attackers from reaching vulnerable communication channels.
🎯 Exploit Status
Requires network access to intercept or spoof traffic between QRadar hosts. Attackers need to be positioned to manipulate inter-host communications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.3.3 Fix Pack 10 and 7.4.3 Fix Pack 10
Vendor Advisory: https://www.ibm.com/support/pages/node/6449668
Restart Required: Yes
Instructions:
1. Download the appropriate fix pack from IBM Fix Central. 2. Apply the fix pack following IBM's installation guide. 3. Restart QRadar services as required.
🔧 Temporary Workarounds
Network Segmentation
allIsolate QRadar hosts from untrusted networks and implement strict firewall rules for inter-host communication.
Traffic Encryption
allEnsure all inter-host communication uses strong encryption protocols.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate QRadar hosts from potential attackers.
- Monitor network traffic between QRadar hosts for suspicious patterns or unauthorized connections.
🔍 How to Verify
Check if Vulnerable:
Check QRadar version via Admin interface or command line. Vulnerable versions are 7.3.0-7.3.3 and 7.4.0-7.4.3.Check Version:
cat /opt/qradar/version.txtVerify Fix Applied:
Verify version is updated to 7.3.3 Fix Pack 10 or 7.4.3 Fix Pack 10, and check patch installation logs.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution logs
- Failed authentication attempts between hosts
- Unexpected process creation
Network Indicators:
- Unusual traffic patterns between QRadar hosts
- Suspicious network connections to QRadar ports
SIEM Query:
source="qradar" AND (event_name="Command Execution" OR event_name="Process Creation") AND severity>=8