CVE-2016-2875 in Security QRadar SIEM
Summary
by MITRE
IBM Security QRadar SIEM 7.1.x and 7.2.x before 7.2.7 allows remote authenticated users to execute arbitrary OS commands as root via unspecified vectors.
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Analysis
by VulDB Data Team • 03/21/2019
IBM Security QRadar SIEM versions 7.1.x and 7.2.x prior to 7.2.7 contain a critical vulnerability that enables remote authenticated attackers to execute arbitrary operating system commands with root privileges. This vulnerability represents a severe privilege escalation issue that directly compromises the integrity and confidentiality of security monitoring systems. The flaw exists within the command execution mechanisms of the SIEM platform, allowing authenticated users to bypass normal access controls and gain elevated system privileges. The vulnerability is classified under CWE-78 as a failure to sanitize operating system command arguments, which is a common vector for command injection attacks. Attackers exploiting this vulnerability can potentially gain complete control over the QRadar appliance, enabling them to modify security policies, access sensitive log data, or establish persistent backdoors within the organization's security infrastructure. The impact extends beyond simple command execution as it provides attackers with root-level access to the underlying operating system, potentially allowing them to manipulate the SIEM's core functionality and compromise the entire security monitoring environment. This vulnerability directly aligns with ATT&CK technique T1059.001 for command and scripting interpreter, and T1548.001 for abuse of system permissions, as it allows attackers to leverage legitimate system tools and processes to execute malicious commands with elevated privileges. The affected versions represent a significant risk to organizations relying on QRadar for security event monitoring and correlation, as the compromised system could be used to hide malicious activities or disrupt security operations. The vulnerability's remote nature means that attackers do not require physical access to the system, making it particularly dangerous in networked environments where QRadar systems are accessible over the internet or internal networks.
The technical implementation of this vulnerability appears to involve insufficient input validation and sanitization within the QRadar SIEM's command processing subsystem. When authenticated users submit certain commands or parameters to the system, the platform fails to properly validate or escape these inputs before executing them as operating system commands. This creates an environment where maliciously crafted inputs can be interpreted by the underlying shell and executed with root privileges. The vulnerability affects both major release lines of QRadar SIEM, indicating a fundamental flaw in the command execution framework that was not adequately addressed in the development cycle. Organizations utilizing these vulnerable versions face a high probability of successful exploitation, particularly when the SIEM system is accessible to users who should not have elevated privileges. The security implications of this vulnerability extend to the broader enterprise security posture, as QRadar systems often serve as central repositories for security events and logs that are critical for incident response and compliance monitoring. Attackers exploiting this vulnerability could potentially access sensitive data, modify security policies, or disable security monitoring capabilities, effectively removing critical security controls from the organization's defense infrastructure. The vulnerability also creates opportunities for lateral movement within networks, as compromised QRadar systems often serve as central points for security information and event management. Organizations should consider the potential for this vulnerability to be used as a stepping stone for more extensive attacks, particularly in environments where QRadar systems are integrated with other security tools and monitoring systems.
Organizations affected by this vulnerability must implement immediate mitigations to protect their security infrastructure. The primary recommendation is to upgrade to QRadar SIEM version 7.2.7 or later, which contains the necessary patches to address the command execution flaw. System administrators should also review and restrict user access permissions to minimize the attack surface and reduce the risk of unauthorized users exploiting the vulnerability. Network segmentation and access controls should be implemented to limit access to QRadar systems to only authorized personnel with legitimate business requirements. Security monitoring should be enhanced to detect anomalous command execution patterns that may indicate exploitation attempts. Organizations should also conduct thorough vulnerability assessments to identify any potential compromise of their QRadar systems and implement comprehensive incident response procedures. The vulnerability's classification as a privilege escalation issue means that even if attackers cannot directly access the system, they may still be able to exploit it through compromised accounts or credentials. Regular security audits and penetration testing should be conducted to verify that the system remains secure after applying patches and implementing additional controls. The remediation process should include validation that all affected components have been properly updated and that no residual vulnerabilities remain. Organizations should also consider implementing additional security controls such as application whitelisting, privileged access management, and enhanced logging to detect and prevent similar vulnerabilities in other systems. The vulnerability serves as a reminder of the critical importance of maintaining current security patches and implementing robust access controls for security monitoring systems that contain sensitive operational data.