Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in WebsiteBaker version 2.13.3. Authenticated users can upload SVG files that contain embedded JavaScript code. When these SVG files are viewed, the malicious JavaScript executes in the context of the WebsiteBaker application, allowing persistent XSS attacks. The root cause is the application's failure to properly sanitize or validate the contents of uploaded SVG files before storing and serving them. [1]

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Impact Analysis

This vulnerability can allow attackers to execute arbitrary JavaScript code in the browsers of users who view the malicious SVG files. This can lead to session hijacking, defacement, theft of sensitive information, or other malicious actions performed on behalf of the victim user within the WebsiteBaker application. [1]

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Detection Guidance

To detect this vulnerability, you can check for the presence of uploaded SVG files containing embedded JavaScript in the media section of WebsiteBaker 2.13.3. One approach is to log in as an authenticated user and review uploaded SVG files for script tags. For example, you can download SVG files from the server and search for <script> tags using commands like: 1. wget or curl to download SVG files: curl -O http://yourwebsite/media/filename.svg 2. grep to search for script tags: grep -i '<script' filename.svg This helps identify malicious SVG files with embedded JavaScript. Additionally, monitoring HTTP requests for SVG file uploads or accesses may help detect exploitation attempts. [1]

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Mitigation Strategies

Immediate mitigation steps include restricting or disabling SVG file uploads for authenticated users, or implementing strict server-side validation and sanitization of SVG files to remove any embedded JavaScript before storing or serving them. Additionally, applying access controls to limit who can upload files and monitoring uploaded content for malicious scripts can reduce risk. If possible, update or patch WebsiteBaker to a version that addresses this vulnerability once available. [1]

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