Executive Summary

The Sina Extension for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the Fancy Text Widget and Countdown Widget DOM attributes in all versions up to and including 3.7.0.

This vulnerability arises due to insufficient input sanitization and output escaping, allowing authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts.

These injected scripts execute whenever a user accesses the compromised page, potentially leading to malicious actions.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can allow attackers with Contributor-level access to inject malicious scripts into pages.

When other users visit these pages, the malicious scripts execute in their browsers, which can lead to theft of sensitive information, session hijacking, or unauthorized actions performed on behalf of the user.

The CVSS score of 6.4 indicates a medium severity impact, with potential confidentiality and integrity loss but no impact on availability.

Useful 0 Not Useful 0

Compliance Impact

I don't know

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves Stored Cross-Site Scripting (XSS) via the Fancy Text Widget and Countdown Widget DOM attributes in the Sina Extension for Elementor plugin up to version 3.7.0. Detection involves checking for injected malicious scripts in pages using these widgets.

Since the vulnerability requires Contributor-level or higher authenticated access to inject scripts, detection can include reviewing the content of pages or posts that use these widgets for suspicious script tags or unusual DOM attributes.

Suggested commands to detect potential exploitation include searching the WordPress database for suspicious script injections in post content or widget settings. For example, using WP-CLI to search for script tags in post content:

• wp db query "SELECT ID, post_title FROM wp_posts WHERE post_content LIKE '%<script>%' OR post_content LIKE '%onerror=%'"
• grep -r --include='*.php' '<script>' wp-content/plugins/sina-extension-for-elementor/

Additionally, monitoring HTTP traffic for suspicious payloads or unexpected script injections in responses from pages using the affected widgets may help detect exploitation attempts.

Useful 0 Not Useful 0

Mitigation Strategies

To mitigate this Stored Cross-Site Scripting vulnerability in the Sina Extension for Elementor plugin, the immediate step is to update the plugin to a version later than 3.7.0 where the issue is fixed.

If an update is not immediately available, restrict Contributor-level and higher user permissions to trusted users only, as the vulnerability requires authenticated access at that level.

Additionally, review and sanitize any content created with the Fancy Text Widget and Countdown Widget to remove any injected scripts.

As a temporary measure, consider disabling or removing the affected widgets until a patch or update is applied.

Useful 0 Not Useful 0