CVE-2024-3460 in KioWare
Summary
by MITRE • 05/14/2024
In KioWare for Windows (versions all through 8.34) it is possible to exit this software and use other already opened applications utilizing a short time window before the forced automatic logout occurs. Then, by using some built-in function of these applications, one may launch any other programs. In order to exploit this vulnerability external applications must be left running when the KioWare software is launched. Additionally, an attacker must know the PIN set for this Kioware instance and also slow down the application with some specific task which extends the usable time window.
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Analysis
by VulDB Data Team • 02/12/2025
This vulnerability exists in KioWare for Windows versions through 8.34 and represents a critical session management flaw that allows unauthorized access to system resources through a time-based race condition. The vulnerability stems from insufficient session termination controls that create a temporal window during which users can maintain access to previously opened applications even after the KioWare session should have ended. This weakness directly maps to CWE-362, which addresses concurrent execution issues, and specifically relates to improper handling of session expiration and resource cleanup. The flaw enables privilege escalation through a window of opportunity where system resources remain accessible despite the intended forced logout mechanism.
The technical exploitation requires precise timing and specific conditions to succeed. Attackers must first establish a KioWare session with knowledge of the PIN authentication mechanism, then deliberately slow down application processes to extend the vulnerable time window. This manipulation allows them to leverage already running external applications that were launched before the forced logout occurred. The vulnerability exploits the lack of proper process isolation and resource cleanup between the KioWare session termination and the actual release of system resources. This approach aligns with ATT&CK technique T1059.001 for command and scripting interpreter usage, as attackers can execute arbitrary programs through legitimate application functions. The attack vector demonstrates a classic privilege escalation pattern where initial access through legitimate authentication leads to unauthorized program execution.
The operational impact of this vulnerability extends beyond simple unauthorized access to potentially enabling full system compromise through lateral movement. Once an attacker successfully exploits this window, they can execute arbitrary code through legitimate application interfaces, potentially leading to data exfiltration, system modification, or further privilege escalation. The vulnerability is particularly dangerous in kiosk environments where KioWare is designed to provide controlled access to specific applications while restricting access to system resources. This creates a security boundary failure where the intended isolation of user sessions is breached, allowing attackers to access other running applications and potentially leverage their privileges. The attack requires minimal sophistication but significant timing precision, making it difficult to detect through standard monitoring mechanisms.
Mitigation strategies should focus on implementing immediate resource cleanup upon session termination and eliminating the temporal window that enables exploitation. System administrators should upgrade to KioWare versions that address this vulnerability, as the manufacturer has likely released patches to fix the session management implementation. Additional controls include implementing strict process isolation between KioWare sessions and external applications, configuring automatic application termination upon session end, and establishing robust monitoring for unusual process execution patterns. Network segmentation and privilege separation should be implemented to limit the potential impact of successful exploitation. Organizations should also consider implementing application whitelisting policies and regular security assessments to identify similar session management vulnerabilities in other kiosk or restricted access systems. The vulnerability highlights the importance of proper session lifecycle management and resource cleanup in security-critical applications.