Executive Summary

CVE-2019-25264 is a persistent cross-site scripting (XSS) vulnerability in Snipe-IT version 4.7.5 and earlier. It allows authorized users to upload malicious SVG files that contain embedded JavaScript code. When other users view these SVG files within the application, the embedded scripts execute arbitrary JavaScript in their browsers.

This happens because the application does not properly sanitize or neutralize the script tags inside the uploaded SVG files, enabling attackers to inject and persistently store malicious scripts on the server.

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Impact Analysis

[{'type': 'paragraph', 'content': "This vulnerability can lead to attackers executing arbitrary JavaScript code in the context of other users' browsers when they view the malicious SVG files. Potential impacts include session hijacking, unauthorized actions within the application, and data compromise."}, {'type': 'list_item', 'content': "Execution of arbitrary JavaScript code in victim users' browsers."}, {'type': 'list_item', 'content': 'Hijacking of user sessions.'}, {'type': 'list_item', 'content': 'Unauthorized actions performed on behalf of other users.'}, {'type': 'list_item', 'content': 'Potential compromise of user data.'}] [1, 3]

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by checking for the presence of malicious SVG files containing embedded JavaScript uploaded by authorized users in the accessories section of the Snipe-IT application.'}, {'type': 'paragraph', 'content': 'One way to detect exploitation attempts is to monitor POST requests to the /accessories endpoint with multipart/form-data payloads that include SVG files.'}, {'type': 'paragraph', 'content': 'A practical approach is to inspect uploaded SVG files for embedded <script> tags or JavaScript code.'}, {'type': 'list_item', 'content': 'Use a command-line tool like curl or wget to capture or replay POST requests to /accessories and analyze the uploaded files.'}, {'type': 'list_item', 'content': 'Example command to check for suspicious SVG files on the server filesystem (assuming access):'}, {'type': 'list_item', 'content': "grep -r --include='*.svg' '<script' /path/to/snipe-it/uploads/"}, {'type': 'list_item', 'content': 'Use web application logs to identify POST requests to /accessories that include SVG uploads.'}] [3]

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Mitigation Strategies

The immediate mitigation step is to upgrade Snipe-IT to version 4.7.5 or later, where this vulnerability has been addressed.

After upgrading, clear browser cookies to avoid session issues.

Additionally, restrict the ability to upload SVG files to trusted users only or disable SVG uploads if possible.

Implement input validation or sanitization on uploaded SVG files to remove embedded JavaScript.

Monitor and audit uploaded accessories for suspicious SVG files containing script tags.

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Compliance Impact

[{'type': 'paragraph', 'content': "The vulnerability allows authorized users to upload malicious SVG files containing embedded JavaScript, which can execute arbitrary code in other users' browsers. This can lead to session hijacking or unauthorized actions within the application."}, {'type': 'paragraph', 'content': 'Such security weaknesses may impact compliance with standards and regulations like GDPR or HIPAA, which require protection of user data and prevention of unauthorized access or data breaches.'}, {'type': 'paragraph', 'content': 'However, the provided information does not explicitly discuss the direct effects of this vulnerability on compliance with these standards.'}] [1, 3]

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