CVE-2020-4364 in QRadar SIEM
Summary
by MITRE
IBM QRadar SIEM 7.3 and 7.4 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. IBM X-Force ID: 178961.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 10/30/2020
IBM QRadar SIEM version 7.3 and 7.4 contains a cross-site scripting vulnerability that represents a critical security weakness in the web-based user interface. This flaw resides in the application's handling of user-supplied input within web requests, allowing malicious actors to inject malicious javascript code that executes within the context of a victim's browser session. The vulnerability specifically affects the web UI components where user input is not properly sanitized or validated before being rendered back to the browser. When a user visits a maliciously crafted page or interacts with a compromised application feature, the injected javascript code executes with the privileges of the authenticated user, potentially enabling attackers to hijack sessions and access sensitive information.
The technical nature of this vulnerability aligns with CWE-79, which describes cross-site scripting flaws where untrusted data is incorporated into web pages without proper validation or sanitization. This weakness creates an attack surface that allows threat actors to exploit the trust relationship between the user and the application. The vulnerability's impact extends beyond simple script execution as it can be leveraged to steal session cookies, modify page content, redirect users to malicious sites, or perform actions on behalf of authenticated users. In the context of QRadar SIEM, this represents a severe compromise since the application handles sensitive security information and user credentials within trusted sessions. The attack vector typically involves crafting malicious input that gets stored or reflected in the web application, then executed when other users view the affected page.
The operational impact of this vulnerability is significant for organizations relying on IBM QRadar SIEM for security monitoring and incident response. Attackers who successfully exploit this flaw can gain access to the full functionality of the SIEM application, potentially leading to credential disclosure, unauthorized access to security events and logs, and the ability to modify or delete critical security data. The vulnerability undermines the integrity of the security monitoring platform itself, as attackers can manipulate the very system designed to detect and prevent malicious activities. Organizations may experience unauthorized access to sensitive security information, potential data exfiltration, and compromised security posture. The attack can be executed with minimal technical expertise, making it particularly dangerous as it allows adversaries to escalate privileges and maintain persistent access within the security infrastructure.
Mitigation strategies should focus on immediate patching of affected IBM QRadar SIEM versions to address the cross-site scripting vulnerability. Organizations must ensure that all instances of QRadar SIEM 7.3 and 7.4 are updated with the latest security patches provided by IBM. Network segmentation and access controls should be implemented to limit exposure of the web interface to trusted networks only. Input validation and output encoding mechanisms should be strengthened to prevent malicious code injection attempts. Regular security assessments and penetration testing should be conducted to identify additional vulnerabilities in the SIEM environment. Additionally, implementing web application firewalls and security monitoring solutions can help detect and prevent exploitation attempts. The vulnerability's classification under CWE-79 and its potential for credential theft aligns with ATT&CK techniques such as credential access and command and control, emphasizing the need for comprehensive defensive measures. Organizations should also consider implementing security awareness training for administrators to recognize potential social engineering attempts that might exploit this vulnerability.