CVE-2020-4160 in QRadar Network Security
Summary
by MITRE • 11/08/2021
IBM QRadar Network Security 5.4.0 and 5.5.0 could allow a remote attacker to obtain sensitive information, caused by the failure to properly enable HTTP Strict Transport Security. An attacker could exploit this vulnerability to obtain sensitive information using man in the middle techniques. IBM X-Force ID: 174340.
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Analysis
by VulDB Data Team • 11/11/2021
IBM QRadar Network Security versions 5.4.0 and 5.5.0 contain a critical security flaw that exposes systems to man-in-the-middle attacks through improper implementation of HTTP Strict Transport Security (HSTS). This vulnerability resides in the web application interface of the security platform, where the absence of proper HSTS header configuration creates opportunities for attackers to intercept and manipulate communication between clients and the server. The flaw allows remote adversaries to perform session hijacking and credential theft by exploiting the lack of strict transport security enforcement. According to CWE-311, this represents a direct failure to protect sensitive data during transmission, while the ATT&CK framework categorizes this as a credential access technique through network sniffing and man-in-the-middle operations. The vulnerability specifically affects the web console and API endpoints that handle administrative functions, making it particularly dangerous for organizations relying on QRadar for network security monitoring and incident response.
The technical implementation of this flaw stems from the web server configuration where the HSTS header is either absent or improperly configured, typically manifesting as missing Strict-Transport-Security response headers in HTTP responses. When HSTS is not properly enabled, browsers cannot enforce secure HTTPS connections, allowing attackers to downgrade connections to insecure HTTP or intercept encrypted communications. This vulnerability aligns with CWE-319 which addresses the exposure of sensitive information through improper handling of transport layer security mechanisms. Attackers can exploit this weakness by positioning themselves between the user and the QRadar server, potentially capturing session tokens, administrative credentials, or sensitive network data that flows through the affected interface. The impact extends beyond simple information disclosure as it enables attackers to establish persistent access to the security platform's administrative functions.
Organizations utilizing IBM QRadar Network Security 5.4.0 and 5.5.0 face significant operational risks when this vulnerability remains unpatched, as it compromises the integrity of the entire security infrastructure. The attack surface includes any administrative user who accesses the web console over an untrusted network, making remote exploitation particularly concerning for distributed security teams. The vulnerability also affects automated systems that interact with QRadar's API endpoints, potentially allowing attackers to escalate privileges and gain unauthorized access to network monitoring data. From a compliance perspective, this flaw violates security standards such as NIST SP 800-53 controls that require secure communication channels for sensitive data handling. The ATT&CK technique T1566.001 for credential access through phishing and T1046 for network service scanning becomes more effective when combined with this HSTS weakness, creating a multi-layered attack vector.
Mitigation strategies should focus on immediate implementation of proper HSTS header configuration with appropriate max-age values, typically recommended at least 31536000 seconds for long-term security. Organizations must ensure that all web interfaces, including management consoles and API endpoints, properly implement the Strict-Transport-Security header with preload directives where appropriate. IBM released patches addressing this specific vulnerability in subsequent versions, and organizations should prioritize upgrading to patched releases. Network segmentation and additional monitoring controls should be implemented to detect unusual access patterns that might indicate exploitation attempts. Security teams should also review their certificate management practices and ensure that all SSL/TLS configurations meet industry best practices as outlined in NIST SP 800-52 for cryptographic standards. The remediation process should include comprehensive testing of web server configurations to verify that HSTS headers are properly enforced across all affected interfaces, preventing attackers from exploiting this fundamental transport layer security weakness.