CVE-2018-6302 in Smartcam
Summary
by MITRE
Denial of service by blocking of new camera registration on the cloud server in Hanwha Techwin Smartcams
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Analysis
by VulDB Data Team • 05/27/2020
The vulnerability identified as CVE-2018-6302 represents a critical denial of service weakness within the Hanwha Techwin Smartcams cloud server infrastructure that specifically targets the camera registration process. This issue manifests when legitimate camera devices are unable to register with the cloud server, effectively preventing new security devices from becoming operational within the surveillance network. The flaw exists within the server-side authentication and registration mechanisms that govern how new camera endpoints can establish connections and authenticate themselves to the cloud management platform. The vulnerability stems from inadequate input validation and insufficient access control measures that fail to properly handle registration requests from legitimate devices, creating a scenario where the system becomes unresponsive to new camera connections.
The technical implementation of this vulnerability involves a race condition or resource exhaustion scenario within the cloud server's registration handling subsystem. When multiple camera devices attempt to register simultaneously or when malformed registration requests are processed without proper sanitization, the server's registration service becomes overwhelmed or enters a state where it cannot accept new connections. This condition is particularly dangerous in security environments where continuous surveillance is required, as it directly impacts the operational integrity of the entire camera network. The flaw demonstrates poor error handling practices and lacks proper rate limiting or request queuing mechanisms that would normally protect against such service disruption scenarios. According to CWE standards, this vulnerability maps to CWE-400 which covers "Uncontrolled Resource Consumption" and potentially CWE-347 which addresses "Improper Verification of Cryptographic Signature" if the issue involves authentication failures.
The operational impact of CVE-2018-6302 extends far beyond simple service interruption, as it creates a cascading failure within security infrastructure that can compromise entire surveillance deployments. Organizations relying on Hanwha Techwin Smartcams for perimeter security, monitoring, or access control systems face significant risks when this vulnerability is exploited, as it prevents new camera installations from functioning properly and can potentially disrupt existing camera operations. The denial of service affects not only new device integration but also creates opportunities for attackers to maintain persistent access to the surveillance network by preventing legitimate device re-registration or replacement. This vulnerability aligns with ATT&CK technique T1499.001 which covers "Cloud Service Account Compromise" and represents a critical weakness that can be exploited to maintain long-term access to security infrastructure while simultaneously blocking legitimate administrative access to new devices.
Mitigation strategies for this vulnerability require immediate implementation of robust rate limiting controls, improved input validation procedures, and enhanced monitoring of registration requests to detect anomalous behavior patterns. System administrators should implement proper session management and connection throttling to prevent registration request flooding that could trigger the denial of service condition. The cloud server should be configured with proper access controls that verify registration requests before processing them, and all authentication mechanisms should include comprehensive error handling that prevents resource exhaustion. Organizations should also implement network segmentation to isolate the registration service from other critical infrastructure components and deploy intrusion detection systems that can identify unusual registration patterns. Additionally, regular firmware updates and patches should be applied to address the underlying implementation flaws in the camera registration process, with particular attention to ensuring that authentication mechanisms properly validate all incoming requests and maintain adequate resource allocation to handle legitimate registration traffic without compromising system stability.