CVE-2014-8809 in WP Symposium
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the WP Symposium plugin before 14.11 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) text parameter in an addComment action to ajax/profile_functions.php, (2) compose_text parameter in a sendMail action to ajax/mail_functions.php, (3) comment parameter in an add_comment action to ajax/lounge_functions.php, or (4) name parameter in a create_album action to ajax/gallery_functions.php.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/09/2022
The CVE-2014-8809 vulnerability represents a critical cross-site scripting flaw affecting the WP Symposium plugin for WordPress prior to version 14.11. This vulnerability stems from insufficient input validation and sanitization within multiple ajax handler endpoints, creating multiple attack vectors that collectively weaken the plugin's security posture. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting weaknesses in web applications, making it a direct descendant of well-known web security flaws that have plagued web platforms for decades.
The technical implementation of this vulnerability occurs through four distinct parameter injection points within the plugin's ajax functionality. Attackers can exploit the text parameter in the addComment action to inject malicious scripts into the ajax/profile_functions.php endpoint, or leverage the compose_text parameter within the sendMail action targeting ajax/mail_functions.php. Additionally, the comment parameter in add_comment action to ajax/lounge_functions.php and the name parameter in create_album action to ajax/gallery_functions.php provide further attack surfaces. Each of these injection points represents a separate vector that bypasses the plugin's input validation mechanisms, allowing malicious payloads to be executed within the context of authenticated users' browsers.
The operational impact of CVE-2014-8809 extends beyond simple script injection, as it enables attackers to execute arbitrary code within victim browsers and potentially escalate privileges. When exploited, these vulnerabilities allow remote attackers to steal session cookies, perform actions on behalf of users, redirect victims to malicious sites, or even modify user profiles and content. The attack surface is particularly concerning because the affected endpoints are commonly used within social networking and community platforms, where users frequently engage with comment systems, messaging features, and media sharing capabilities. This creates numerous opportunities for attackers to harvest sensitive information or manipulate user data at scale.
The attack vectors align with ATT&CK technique T1566 which covers social engineering through malicious content delivery, specifically targeting web application vulnerabilities. Organizations running affected versions of WP Symposium face significant risk of unauthorized access and data compromise, particularly in environments where the plugin is used for user-generated content management. The vulnerability's persistence across multiple ajax endpoints suggests a systemic lack of proper input sanitization throughout the plugin's codebase, indicating that similar issues may exist in other components. This particular vulnerability demonstrates the importance of implementing comprehensive input validation and output encoding practices across all user-facing application interfaces, as recommended by OWASP top ten security controls and the NIST Cybersecurity Framework for web application security.
Mitigation strategies should include immediate upgrade to WP Symposium version 14.11 or later, which contains the necessary patches for all identified vulnerabilities. Additionally, administrators should implement proper input validation at multiple layers including client-side and server-side checks, employ Content Security Policy headers to limit script execution, and conduct regular security audits of third-party plugins. The vulnerability also underscores the necessity of maintaining up-to-date security practices and implementing automated patch management systems to prevent exploitation of known vulnerabilities in widely-used web applications.