CVE-2025-5178 in Queue Ticket Kiosk
Summary
by MITRE • 05/26/2025
A vulnerability classified as critical has been found in Realce Tecnologia Queue Ticket Kiosk up to 20250517. Affected is an unknown function of the file /adm/ajax.php of the component Image File Handler. The manipulation of the argument files[] leads to unrestricted upload. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 05/26/2025
This critical vulnerability exists within the Realce Tecnologia Queue Ticket Kiosk software version 20250517 and earlier, specifically targeting the image file handling functionality within the administrative interface. The flaw resides in the /adm/ajax.php file where the files[] parameter is processed without adequate validation or sanitization measures. This represents a classic unrestricted file upload vulnerability that allows attackers to bypass normal security controls and execute arbitrary code on the affected system.
The technical implementation of this vulnerability stems from insufficient input validation within the image file handler component. When the files[] parameter is submitted through the ajax.php endpoint, the application fails to properly verify the file type, content, or extension before processing the upload request. This absence of proper validation creates an exploitable condition where malicious actors can upload potentially harmful files including web shells, malicious scripts, or other payload types that could compromise the entire system. The vulnerability is particularly dangerous because it can be exploited remotely without requiring authentication, making it accessible to any attacker with network access to the affected system.
The operational impact of this vulnerability is severe and multifaceted, potentially enabling complete system compromise and unauthorized access to sensitive data. An attacker who successfully exploits this vulnerability could gain persistent access to the kiosk system, potentially leading to data exfiltration, system disruption, or use as a foothold for further attacks within the network. The unrestricted upload capability allows for the deployment of malicious code that could establish backdoors, modify system configurations, or provide attackers with administrative privileges. Given that this is a remote exploit, the attack surface is extensive and the system becomes immediately vulnerable to exploitation upon exposure to the internet.
Based on the CWE classification system, this vulnerability maps to CWE-434 which specifically addresses "Unrestricted Upload of File with Dangerous Type" and represents a fundamental failure in input validation and access control. From an ATT&CK framework perspective, this vulnerability aligns with T1190 "Exploit Public-Facing Application" and T1059 "Command and Scripting Interpreter" as it enables attackers to execute malicious code through the compromised upload functionality. The lack of vendor response to early disclosure attempts suggests a potential delay in remediation efforts, which could leave systems exposed for extended periods. Organizations should immediately implement network segmentation to limit access to the affected system, disable unnecessary network services, and deploy intrusion detection systems to monitor for exploitation attempts. The most effective mitigation strategy involves implementing proper input validation, file type checking, and content verification mechanisms within the affected application component.