CVE-2021-38919 : Exploit Details and Defense Strategies

IBM QRadar SIEM versions 7.3.3, 7.4.3, and 7.5.0 may expose authorized service tokens, impacting confidentiality.

Understanding CVE-2021-38919

This CVE is related to IBM QRadar SIEM versions 7.3.3, 7.4.3, and 7.5.0 potentially disclosing authorized service tokens.

What is CVE-2021-38919?

IBM QRadar SIEM versions 7.3.3, 7.4.3, and 7.5.0, in certain scenarios, could reveal authorized service tokens to other QRadar users, posing a confidentiality risk. The IBM X-Force ID for this vulnerability is 210021.

The Impact of CVE-2021-38919

This vulnerability has a CVSS base score of 5.9, indicating a medium severity level. The attack complexity is high, with confidentiality impact rated as high. The exploit code maturity is unproven, meaning the exploit might not be widely known or reliable.

Technical Details of CVE-2021-38919

The technical details of this CVE are as follows:

Vulnerability Description

IBM QRadar SIEM versions 7.3.3, 7.4.3, and 7.5.0 could unintentionally expose authorized service tokens, leading to a potential information disclosure.

Affected Systems and Versions

Product: IBM QRadar SIEM
Vendor: IBM
Affected Versions: 7.3.3, 7.4.3, 7.5.0

Exploitation Mechanism

The vulnerability can be exploited in a network environment without requiring privileges, making it vital to address promptly.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-38919, consider the following:

Immediate Steps to Take

Implement official fixes provided by IBM.
Monitor for any unauthorized access or unusual activity in QRadar.

Long-Term Security Practices

Regularly update and patch IBM QRadar SIEM to the latest versions.
Conduct security assessments and audits to identify and address any vulnerabilities.

Patching and Updates

Ensure that all affected IBM QRadar SIEM versions, specifically 7.3.3, 7.4.3, and 7.5.0, are updated with official fixes from IBM to remediate the vulnerability.