CVE-2021-29849 : Exploit Details and Defense Strategies

IBM QRadar SIEM versions 7.3 and 7.4 are vulnerable to cross-site scripting, allowing users to inject arbitrary JavaScript code into the Web UI. This could potentially lead to unauthorized access and credential disclosure.

Understanding CVE-2021-29849

This CVE involves a cross-site scripting vulnerability in IBM QRadar SIEM versions 7.3 and 7.4.

What is CVE-2021-29849?

CVE-2021-29849 is a security vulnerability in IBM QRadar SIEM that enables attackers to execute malicious JavaScript code within the Web UI, compromising the integrity and confidentiality of the system.

The Impact of CVE-2021-29849

The impact of this vulnerability is significant as it allows threat actors to manipulate the Web UI to execute unauthorized actions, potentially leading to credential theft and unauthorized access.

Technical Details of CVE-2021-29849

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability in IBM QRadar SIEM versions 7.3 and 7.4 permits attackers to insert and execute malicious JavaScript code in the Web UI, posing a risk of credentials exposure and compromised sessions.

Affected Systems and Versions

IBM QRadar SIEM versions 7.3 and 7.4 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted JavaScript code into vulnerable components of the Web UI, taking advantage of insufficient input validation.

Mitigation and Prevention

To address CVE-2021-29849 and enhance system security, users should take the following actions.

Immediate Steps to Take

Apply official fixes provided by IBM to remediate the vulnerability.
Monitor system logs for any suspicious activities related to cross-site scripting.

Long-Term Security Practices

Regularly update and patch IBM QRadar SIEM to the latest versions.
Implement secure coding practices to prevent cross-site scripting vulnerabilities.

Patching and Updates

Stay informed about security advisories from IBM regarding QRadar SIEM and ensure timely application of patches and updates to mitigate the risk of exploitation.