CVE-2020-5013 – IBM QRadar SIEM versions 7.3 and 7.4 contain an... (How to Fix)

Q: What is the severity of CVE-2020-5013?

CVE-2020-5013 has a CVSS score of 8.1 (HIGH). IBM QRadar SIEM versions 7.3 and 7.4 contain an XML External Entity (XXE) vulnerability that allows remote attackers to read sensitive files from the server or cause denial of service through resource consumption. This affects organizations using vulnerable QRadar SIEM deployments for security monitoring. The vulnerability requires processing of malicious XML data.

📋 TL;DR

IBM QRadar SIEM versions 7.3 and 7.4 contain an XML External Entity (XXE) vulnerability that allows remote attackers to read sensitive files from the server or cause denial of service through resource consumption. This affects organizations using vulnerable QRadar SIEM deployments for security monitoring. The vulnerability requires processing of malicious XML data.

💻 Affected Systems

Products:

IBM QRadar SIEM

Versions: 7.3.0 through 7.3.3 and 7.4.0 through 7.4.3

Operating Systems: Linux

Default Config Vulnerable: ⚠️ Yes

Notes: All default installations of affected versions are vulnerable when processing XML data.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote attacker gains unauthorized access to sensitive system files, configuration data, or credentials stored on the QRadar server, potentially leading to full system compromise.

🟠

Likely Case

Attacker reads sensitive configuration files or causes memory exhaustion leading to denial of service, disrupting security monitoring capabilities.

🟢

If Mitigated

Limited impact with proper network segmentation and XML parsing restrictions, potentially only causing temporary service disruption.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

XXE vulnerabilities typically have low exploitation complexity, though specific attack vectors for QRadar may require some reconnaissance.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 7.3.3 Patch 11 and 7.4.3 Patch 5

Vendor Advisory: https://www.ibm.com/support/pages/node/6449690

Restart Required: Yes

Instructions:

1. Download the appropriate patch from IBM Fix Central. 2. Apply patch using QRadar console. 3. Restart QRadar services. 4. Verify patch installation through version check.

🔧 Temporary Workarounds

Disable External Entity Processing

linux

Configure XML parsers to disable external entity resolution

Modify XML parser configuration to set features: FEATURE_SECURE_PROCESSING=true, http://apache.org/xml/features/disallow-doctype-decl=true

Network Segmentation

all

Restrict network access to QRadar management interfaces

Configure firewall rules to limit access to QRadar ports (typically 443, 22) to trusted IP ranges only

🧯 If You Can't Patch

Implement strict input validation and sanitization for all XML inputs
Deploy network-based intrusion prevention systems with XXE detection rules

🔍 How to Verify

Check if Vulnerable:

Check QRadar version via admin console or command: /opt/qradar/bin/qradar_versions

Check Version:

/opt/qradar/bin/qradar_versions

Verify Fix Applied:

Verify patch installation through QRadar console under Admin > System and License Management > Installed Patches

📡 Detection & Monitoring

Log Indicators:

Unusual XML parsing errors
Memory exhaustion alerts
Access to sensitive file paths in logs

Network Indicators:

XML payloads containing external entity declarations
Unusual outbound connections from QRadar server

SIEM Query:

source="qradar" AND (error="XML" OR error="entity") OR memory_usage>90%

📊 Metadata

CVE ID: CVE-2020-5013

CVSS v3 Score: 8.1 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE: CWE-611

Published: May 5, 2021

Last Updated: November 21, 2024

🔗 References

https://exchange.xforce.ibmcloud.com/vulnerabilities/193245 VDB Entry,Vendor Advisory
https://www.ibm.com/support/pages/node/6449690 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/193245 VDB Entry,Vendor Advisory
https://www.ibm.com/support/pages/node/6449690 Vendor Advisory

📤 Share & Export

📄 Export Markdown 📋 Export JSON

🔗 Related Vulnerabilities

If you're affected by CVE-2020-5013, you might also want to check these:

📋 TL;DR

💻 Affected Systems

📦 What is this software?

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

Qradar Security Information And Event Manager by Ibm

⚠️ Risk & Real-World Impact

Worst Case

Likely Case

If Mitigated

🎯 Exploit Status

🛠️ Fix & Mitigation

✅ Official Fix

Instructions:

🔧 Temporary Workarounds

Disable External Entity Processing

Network Segmentation

🧯 If You Can't Patch

🔍 How to Verify

Check if Vulnerable:

Check Version:

Verify Fix Applied:

📡 Detection & Monitoring

Log Indicators:

Network Indicators:

SIEM Query:

📊 Metadata

🔗 References

📤 Share & Export

🔗 Related Vulnerabilities