CVE-2016-9568 in Carbon Black Sensor
Summary
by MITRE
A security design issue can allow an unprivileged user to interact with the Carbon Black Sensor and perform unauthorized actions.
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Analysis
by VulDB Data Team • 01/06/2020
The vulnerability identified as CVE-2016-9568 represents a critical security design flaw within the Carbon Black Sensor implementation that fundamentally undermines the integrity of the system's access controls. This issue stems from inadequate privilege separation mechanisms that permit unprivileged users to establish unauthorized interactions with the sensor component, creating a significant attack surface that could be exploited by malicious actors. The flaw manifests in the sensor's inability to properly validate user credentials and authorization levels before permitting communication with core system functions, effectively allowing any local user to bypass intended security boundaries.
The technical root cause of this vulnerability lies in the sensor's insufficient validation of incoming requests and lack of proper access control enforcement. When unprivileged users attempt to interact with the Carbon Black Sensor, the system fails to properly authenticate and authorize these requests, enabling the execution of unauthorized operations that should be restricted to privileged administrative accounts. This design deficiency creates a pathway for privilege escalation and unauthorized system manipulation, as the sensor does not maintain proper separation between user-level processes and critical system functions. The vulnerability specifically affects the sensor's communication protocols and authentication mechanisms, where the system accepts requests without verifying the requesting user's privileges or role within the security framework.
From an operational impact perspective, this vulnerability presents a severe risk to enterprise security infrastructure as it allows any local user to potentially perform actions that could compromise the entire sensor network. Attackers could leverage this weakness to execute unauthorized monitoring activities, modify sensor configurations, or gain access to sensitive threat intelligence data that should remain protected. The implications extend beyond simple unauthorized access, as this vulnerability could enable adversaries to disrupt security operations, evade detection mechanisms, or manipulate the sensor's ability to identify and respond to security incidents. Organizations relying on Carbon Black Sensor for endpoint protection face potential exposure of their entire security posture, as this flaw could be exploited to undermine the fundamental purpose of the sensor in protecting against advanced persistent threats.
The vulnerability aligns with CWE-284, which addresses improper access control in software systems, and demonstrates a clear violation of the principle of least privilege that forms the cornerstone of secure system design. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and defense evasion, as adversaries could use it to gain elevated privileges or manipulate security controls without detection. Organizations should implement immediate mitigations including restricting local user access to sensor components, implementing additional authentication layers, and monitoring for unauthorized sensor interactions. The recommended approach involves deploying proper access control lists, enhancing authentication mechanisms, and ensuring that all sensor communications are properly validated and authorized before processing. Additionally, regular security audits and penetration testing should be conducted to identify similar design flaws in other security components, as this vulnerability demonstrates a systemic issue in how the sensor handles user interactions and access validation.