CVE-2021-38939 : Exploit Details and Defense Strategies

IBM QRadar SIEM versions 7.3, 7.4, and 7.5 are impacted by a vulnerability that allows an authenticated user to access potentially sensitive information stored in log files. This CVE was published on April 25, 2022, with a CVSSv3 base score of 3.7.

Understanding CVE-2021-38939

This section provides insights into the impact and technical details of the CVE.

What is CVE-2021-38939?

The vulnerability in IBM QRadar SIEM versions 7.3, 7.4, and 7.5 enables a user with domain creation access to read sensitive information from log files.

The Impact of CVE-2021-38939

The vulnerability poses a low-severity risk with a CVSSv3 base score of 3.7. Although the impact on availability is none, the confidentiality of stored information is at risk.

Technical Details of CVE-2021-38939

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

IBM QRadar SIEM versions 7.3, 7.4, and 7.5 store sensitive data in log files accessible to authorized users, potentially leading to data exposure.

Affected Systems and Versions

The affected systems include QRadar SIEM versions 7.3, 7.4, and 7.5 from IBM.

Exploitation Mechanism

An authenticated user with permissions to create domains can exploit this vulnerability to access sensitive information stored in log files.

Mitigation and Prevention

This section provides guidance on mitigating the impact of CVE-2021-38939.

Immediate Steps to Take

IBM QRadar SIEM users are advised to apply the official fix provided by IBM to address the vulnerability and prevent unauthorized access to sensitive information.

Long-Term Security Practices

Regularly monitor and restrict user access to sensitive data stored in log files to minimize the risk of unauthorized information disclosure.

Patching and Updates

Stay up-to-date with security bulletins from IBM and apply patches promptly to secure QRadar SIEM installations against known vulnerabilities.