CVE-2021-20392 in QRadar User Behavior Analytics
Summary
by MITRE • 05/15/2021
IBM QRadar User Behavior Analytics 1.0.0 through 4.0.1 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
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Analysis
by VulDB Data Team • 05/16/2021
IBM QRadar User Behavior Analytics version 1.0.0 through 4.0.1 contains a cross-site scripting vulnerability that represents a critical security flaw in the web-based user interface. This vulnerability falls under the Common Weakness Enumeration CWE-79 category, which specifically addresses cross-site scripting attacks where malicious scripts are injected into web applications. The flaw exists in the web user interface component of the QRadar platform, allowing authenticated users to embed arbitrary JavaScript code within the application's interface. This vulnerability is particularly concerning because it operates within a trusted session environment where users have legitimate access to the system, making it easier for attackers to exploit without requiring additional authentication mechanisms.
The technical exploitation of this vulnerability occurs when malicious JavaScript code is injected through input fields or parameters within the web UI that are not properly sanitized or validated. When the vulnerable application processes and renders this malicious content without adequate output encoding or validation, the injected scripts execute within the context of the victim's browser session. This creates a persistent threat where attackers can manipulate the application's behavior to capture sensitive information such as session cookies, user credentials, or other confidential data that flows through the trusted session. The attack vector leverages the trust relationship between the user and the application, making it particularly dangerous in enterprise environments where QRadar is used for security monitoring and threat detection.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable more sophisticated attacks within the enterprise network. Attackers could potentially use this vulnerability to escalate privileges, access restricted functionalities, or establish persistent access points within the security infrastructure. The exposure of session tokens and credentials through cross-site scripting attacks can lead to complete compromise of the QRadar system, allowing unauthorized access to security event data, configuration settings, and monitoring capabilities. This vulnerability undermines the integrity of the security monitoring platform, as it could be exploited to hide malicious activities or manipulate security alerts, potentially leading to undetected breaches within the organization's network infrastructure.
Organizations should implement immediate mitigations including applying the latest security patches from IBM, implementing robust input validation and output encoding mechanisms, and conducting thorough security assessments of the web interface components. Network segmentation and monitoring of suspicious activities within the QRadar environment can help detect potential exploitation attempts. Additionally, implementing web application firewalls and strict content security policies can provide additional layers of protection against cross-site scripting attacks. The vulnerability demonstrates the critical importance of maintaining up-to-date security controls and conducting regular vulnerability assessments of enterprise security platforms, as these systems often serve as the primary interface for security monitoring and incident response activities within organizations.