Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in Advantech WISE-DeviceOn Server versions prior to 5.4. It occurs in the /rmm/v1/action/defined endpoint where an authenticated user can create a task with a defined_name value that is stored and later displayed on the Overview page without proper HTML sanitization. An attacker can inject malicious scripts into the defined_name field, which will then execute in the browsers of users who view the affected task.

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Impact Analysis

The vulnerability can lead to session compromise and unauthorized actions performed by an attacker in the context of the victim user. Since the malicious script executes in the victim's browser, it can steal session tokens or perform actions on behalf of the victim, potentially leading to account takeover or other malicious activities.

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Mitigation Strategies

Users are strongly advised to update Advantech WISE-DeviceOn Server to version 5.4 or later, where the vulnerability has been fixed. This update addresses the stored XSS issue by properly sanitizing the defined_name parameter to prevent malicious script injection. [3]

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