Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in LinkAce versions prior to 2.3.1. It occurs because the application does not properly sanitize the username field before displaying it in the audit log on the /system/audit page. An authenticated attacker can insert malicious JavaScript code as their username. When actions by this user are logged, the malicious script is stored in the database and executed in the browsers of users who view the audit page, especially administrators.

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Impact Analysis

This vulnerability can allow an attacker to execute malicious JavaScript in the browsers of users who view the audit log, potentially leading to theft of sensitive information, session hijacking, or unauthorized actions performed with the privileges of the affected users, particularly administrators. This can compromise the security and integrity of the system.

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Mitigation Strategies

Upgrade LinkAce to version 2.3.1 or later, as this version contains the fix for the Stored Cross-Site Scripting (XSS) vulnerability on the /system/audit page. Additionally, restrict access to the /system/audit page to trusted users and administrators only until the upgrade is applied.

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