CVE-2016-9727 in QRadar
Summary
by MITRE
IBM QRadar 7.2 could allow a remote authenticated attacker to execute arbitrary commands on the system. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM Reference #: 1999542.
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Analysis
by VulDB Data Team • 09/04/2020
The vulnerability identified as CVE-2016-9727 represents a critical command injection flaw within IBM QRadar version 7.2, a widely deployed Security Information and Event Management (SIEM) platform used by organizations worldwide for threat detection and security monitoring. This vulnerability exists in the web interface component of the system and affects authenticated users who possess valid credentials to access the QRadar console. The flaw stems from inadequate input validation and sanitization mechanisms within the application's request processing pipeline, creating an avenue for malicious actors to inject and execute arbitrary system commands with the privileges of the affected application.
The technical exploitation of this vulnerability occurs through a carefully crafted HTTP request that targets specific input fields within the QRadar web interface. When the application processes this malformed request without proper sanitization, it inadvertently passes user-supplied data directly into system command execution contexts. This type of vulnerability aligns with CWE-77 and CWE-94 classifications, representing command injection and code injection weaknesses respectively. The attack vector specifically targets the application's handling of user input in web forms and API endpoints, where the system fails to properly validate or escape special characters that could be interpreted as command delimiters or shell metacharacters. Attackers can leverage this vulnerability to execute arbitrary commands with the same privileges as the QRadar application process, potentially leading to complete system compromise.
The operational impact of CVE-2016-9727 extends beyond simple privilege escalation, as it provides attackers with extensive control over the affected QRadar system. Successful exploitation could enable attackers to install malicious software, modify or delete sensitive data, establish persistent backdoors, and access the full network infrastructure monitored by the SIEM system. The vulnerability's authenticated nature means that attackers must first obtain valid user credentials, but this requirement does not significantly limit the attack surface since QRadar administrators and security analysts typically maintain elevated privileges. Organizations using QRadar for security monitoring face particular risk as attackers could potentially disable security alerts, cover their tracks, or manipulate security logs to evade detection. The vulnerability also impacts the integrity and availability of security operations, as attackers could disrupt the SIEM's ability to monitor and respond to threats effectively.
Organizations should implement immediate mitigations including applying the vendor-provided security patches and updates released by IBM to address this vulnerability. Network segmentation and access controls should be enforced to limit the number of users with administrative privileges and reduce the potential attack surface. Additional defensive measures include implementing web application firewalls to detect and block malicious requests, monitoring for unusual command execution patterns, and conducting regular security assessments of the QRadar environment. The vulnerability demonstrates the importance of proper input validation and the principle of least privilege in security architecture, as highlighted by ATT&CK techniques covering privilege escalation and command execution. Organizations should also consider implementing multi-factor authentication for administrative access and regular security awareness training for personnel who interact with the QRadar system to reduce the risk of credential compromise.