CVE-2014-2854 in SemanticTitle
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the SemanticTitle extension before 1.1.0 for MediaWiki allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/26/2018
The CVE-2014-2854 vulnerability represents a cross-site scripting flaw within the SemanticTitle extension for MediaWiki platforms prior to version 1.1.0. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The SemanticTitle extension, designed to provide semantic capabilities for page titles in MediaWiki environments, contained a critical security gap that allowed remote attackers to execute malicious scripts in the context of victim browsers. The vulnerability was particularly concerning because it affected the core MediaWiki platform, which powers numerous high-profile websites including Wikipedia, making it a prime target for exploitation.
The technical nature of this XSS vulnerability stems from insufficient input validation and output sanitization within the SemanticTitle extension's code implementation. Attackers could exploit this weakness by crafting malicious input through unspecified vectors that would then be processed and rendered without proper sanitization. This allowed attackers to inject arbitrary web scripts or HTML content that would execute in the browsers of unsuspecting users who visited affected pages. The unspecified vectors suggest that the vulnerability could be triggered through multiple entry points including user input fields, URL parameters, or even through manipulated page content that the extension processed. The vulnerability's impact was amplified by the fact that MediaWiki installations often serve as content management systems for organizations with significant user engagement and sensitive information.
The operational impact of CVE-2014-2854 extends far beyond simple script injection, as it could enable attackers to perform session hijacking, deface websites, steal user credentials, or redirect users to malicious sites. In MediaWiki environments, where collaboration and content sharing are fundamental features, this vulnerability could allow attackers to inject malicious content into wiki pages that would be visible to all users. The attack surface was particularly large given that MediaWiki installations are used by educational institutions, government organizations, and enterprises for internal documentation and knowledge sharing. The vulnerability could be exploited to compromise user sessions, potentially leading to unauthorized access to sensitive information or administrative privileges within the wiki environment, which aligns with ATT&CK technique T1531 for Credential Access and T1566 for Initial Access through malicious content.
Organizations affected by this vulnerability should have immediately upgraded to SemanticTitle version 1.1.0 or later, which contained the necessary patches to address the XSS flaws. The mitigation strategy should have included comprehensive security audits of all installed MediaWiki extensions, implementation of proper input validation mechanisms, and deployment of web application firewalls to detect and block malicious payloads. Security teams needed to conduct thorough vulnerability assessments to identify all instances of the vulnerable extension across their infrastructure and ensure proper patch management processes were in place. Additionally, implementing Content Security Policy headers would have provided an additional layer of protection against XSS attacks, as recommended by OWASP guidelines for preventing cross-site scripting vulnerabilities. The incident highlighted the critical importance of maintaining up-to-date security patches for content management systems and extensions, particularly in environments where user-generated content processing occurs.