CVE-2021-39041 Explained : Impact and Mitigation

IBM QRadar SIEM versions 7.3, 7.4, and 7.5 are susceptible to a partial denial of service attack, potentially causing some protocols to stop listening on designated ports.

Understanding CVE-2021-39041

This CVE involves vulnerabilities in IBM QRadar SIEM versions 7.3, 7.4, and 7.5 that could lead to a partial denial of service.

What is CVE-2021-39041?

Affected Product: IBM QRadar SIEM
Vendor: IBM
Date of Public Disclosure: July 11, 2022
Description: The vulnerability may result in certain protocols no longer listening on specified ports.
IBM X-Force ID: 214028

The Impact of CVE-2021-39041

CVSS Base Score: 3.7 (Low Severity)
Attack Vector: Network
Attack Complexity: High
Availability Impact: Low
Exploit Code Maturity: Unproven
Vector String: CVSS:3.0/AC:H/C:N/AV:N/S:U/UI:N/A:L/PR:N/I:N/RL:O/E:U/RC:C

Technical Details of CVE-2021-39041

This section provides in-depth technical information about the CVE.

Vulnerability Description

The vulnerability in IBM QRadar SIEM versions 7.3, 7.4, and 7.5 could be exploited to trigger a partial denial of service attack.

Affected Systems and Versions

IBM QRadar SIEM 7.3
IBM QRadar SIEM 7.4
IBM QRadar SIEM 7.5

Exploitation Mechanism

The vulnerability allows attackers to potentially disrupt some network protocols on the affected versions of IBM QRadar SIEM.

Mitigation and Prevention

Protect your systems from CVE-2021-39041 with the following steps:

Immediate Steps to Take

Update to the latest version of IBM QRadar SIEM
Monitor network traffic for any unusual activity
Implement strong firewall rules and access controls

Long-Term Security Practices

Regularly conduct security assessments and vulnerability scans
Educate staff on cybersecurity best practices
Keep abreast of security advisories from IBM

Patching and Updates

Apply official fixes provided by IBM to address the vulnerability promptly