CVE-2018-17487 in Lobby Track Desktop
Summary
by MITRE
Lobby Track Desktop could allow a local attacker to gain elevated privileges on the system, caused by an error in the printer dialog. By visiting the kiosk and signing in as a visitor, an attacker could exploit this vulnerability using the command line to break out of kiosk mode.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 08/03/2023
CVE-2018-17487 represents a critical privilege escalation vulnerability within Lobby Track Desktop software that enables local attackers to elevate their system privileges through improper handling of printer dialog components. This vulnerability stems from inadequate input validation and privilege separation mechanisms within the kiosk mode implementation, creating a pathway for unauthorized users to bypass security controls and execute malicious commands with elevated permissions.
The technical flaw manifests in the printer dialog functionality where the application fails to properly sanitize user inputs or validate the execution context of commands issued through the kiosk interface. When an attacker gains physical access to the kiosk system and authenticates as a visitor, they can leverage this weakness to execute arbitrary commands that break out of the restricted kiosk environment. This occurs because the printer dialog component does not properly enforce privilege boundaries, allowing low-privilege user sessions to escalate their access level through command-line execution mechanisms.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the security model of the kiosk system. Attackers can exploit this weakness to install malicious software, modify system configurations, access sensitive data, or establish persistent backdoors within the network. The vulnerability is particularly dangerous in environments where kiosk systems are deployed for public access, as it provides a clear attack vector for adversaries to compromise the entire system and potentially move laterally within the network infrastructure.
This vulnerability aligns with CWE-284 Access Control Issues, specifically addressing improper access control mechanisms that allow unauthorized privilege escalation. The attack pattern follows ATT&CK technique T1068 Privilege Escalation through exploitation of application vulnerabilities, where the attacker leverages a weakness in the application's security model to gain elevated privileges. The vulnerability also demonstrates characteristics of T1059 Command and Scripting Interpreter, as the exploitation requires command-line execution to break out of kiosk restrictions.
Mitigation strategies should focus on implementing proper input validation and privilege separation within the printer dialog component, ensuring that all commands executed through kiosk interfaces are properly sanitized and restricted. Organizations should deploy application whitelisting policies to prevent unauthorized command execution, implement proper user session management, and regularly update the Lobby Track Desktop software to address known vulnerabilities. Network segmentation and monitoring solutions should also be deployed to detect anomalous command execution patterns that may indicate exploitation attempts. Additionally, physical security measures should be enhanced to prevent unauthorized access to kiosk systems, as this vulnerability requires physical presence to exploit effectively.