CVE-2018-17490 in EasyLobby Solo
Summary
by MITRE
EasyLobby Solo is vulnerable to a denial of service. By visiting the kiosk and accessing the task manager, a local attacker could exploit this vulnerability to kill the process or launch new processes at will.
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Analysis
by VulDB Data Team • 08/03/2023
The vulnerability identified as CVE-2018-17490 affects EasyLobby Solo systems, which are typically deployed in public access environments such as kiosks and information terminals. These systems are designed to provide controlled access to information services while maintaining security boundaries. The flaw represents a critical weakness in the system's process management and access controls, particularly concerning local privilege escalation capabilities. This vulnerability manifests in environments where physical access to the device is possible, creating a significant risk for organizations relying on these kiosks for sensitive information dissemination or transaction processing.
The technical implementation of this vulnerability stems from inadequate process isolation and privilege management within the EasyLobby Solo platform. When an attacker gains physical access to the kiosk device, they can utilize the task manager functionality to manipulate running processes. This access allows them to terminate critical system processes or initiate unauthorized processes, effectively disrupting the normal operation of the kiosk. The underlying issue lies in the system's failure to properly enforce access controls and process boundaries, enabling local users with minimal privileges to escalate their capabilities through legitimate system tools.
From an operational impact perspective, this vulnerability creates multiple attack vectors for adversaries seeking to disrupt services or potentially establish persistent access to the affected systems. The ability to kill processes could lead to complete service outages, while launching new processes might enable attackers to install malicious software or establish backdoors. Organizations using these kiosks for critical functions such as ticketing, information services, or customer interactions face significant operational risks. The vulnerability essentially transforms a controlled public access device into a potential entry point for more sophisticated attacks, as demonstrated by the attack technique category of process injection and privilege escalation commonly referenced in the ATT&CK framework.
The security implications extend beyond immediate service disruption, as this vulnerability aligns with CWE-284 (Improper Access Control) and represents a clear violation of the principle of least privilege. Systems designed for public kiosk environments should enforce strict isolation between user processes and system processes, preventing local users from accessing administrative tools like task managers. Organizations should consider implementing additional physical security measures, network segmentation, and process monitoring to detect unauthorized process manipulation. Mitigation strategies should include disabling unnecessary administrative tools for local users, implementing robust access controls, and regularly auditing system processes to identify unauthorized activity. This vulnerability highlights the importance of securing all access points to public systems and demonstrates how seemingly minor access control flaws can lead to significant operational and security consequences.