CVE-2018-0578 in PixelYourSite Plugin
Summary
by MITRE
Cross-site scripting vulnerability in PixelYourSite plugin prior to version 5.3.0 for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/04/2020
The CVE-2018-0578 vulnerability represents a critical cross-site scripting flaw discovered in the PixelYourSite WordPress plugin, affecting versions prior to 5.3.0. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security issues. The vulnerability allows remote attackers to inject malicious scripts into web pages viewed by other users, creating a significant risk for website administrators and visitors who may unknowingly execute harmful code. The flaw specifically affects the plugin's handling of user input without proper sanitization or validation, creating an attack surface where malicious actors can exploit the weakness to manipulate website content and user interactions.
The technical implementation of this vulnerability stems from inadequate input validation mechanisms within the PixelYourSite plugin's codebase. Attackers can leverage unspecified vectors to inject arbitrary web scripts or HTML content into the plugin's functionality, potentially targeting various user-facing areas of the WordPress installation. This lack of proper sanitization means that user-supplied data enters the application's processing pipeline without adequate filtering, allowing malicious payloads to persist and execute when other users interact with the affected website. The vulnerability's impact is particularly concerning because it operates at the user interface level, where scripts can be executed in the context of the victim's browser session, potentially leading to session hijacking, data theft, or further exploitation of the compromised system.
From an operational perspective, this vulnerability creates substantial risk for WordPress website owners who rely on the PixelYourSite plugin for analytics and tracking purposes. The attack surface extends beyond simple script injection to include potential privilege escalation scenarios, especially when the plugin is used in conjunction with administrative functions or user management features. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet without requiring physical access to the target system. This characteristic aligns with ATT&CK technique T1059.007 for Scripting and T1566.001 for Phishing, as attackers can craft malicious payloads that appear legitimate to end users while executing harmful code in their browsers.
The mitigation strategy for CVE-2018-0578 primarily involves updating to PixelYourSite plugin version 5.3.0 or later, which includes proper input sanitization and validation mechanisms. System administrators should also implement additional security measures such as web application firewalls, regular security audits, and monitoring for suspicious user activity. The vulnerability highlights the importance of maintaining up-to-date third-party plugins and following secure coding practices. Organizations should conduct thorough vulnerability assessments to identify any other potentially affected plugins or components within their WordPress ecosystem, as similar vulnerabilities may exist in other third-party software. The incident underscores the necessity of implementing defense-in-depth strategies and maintaining comprehensive security monitoring to detect and respond to exploitation attempts.