CVE-2024-11784 in Sell Tickets Online Plugin
Summary
by MITRE • 12/20/2024
The Sell Tickets Online – TicketSource Ticket Shop for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'ticketshop' shortcode in all versions up to, and including, 3.0.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Analysis
by VulDB Data Team • 02/17/2025
The vulnerability identified as CVE-2024-11784 affects the Sell Tickets Online - TicketSource Ticket Shop plugin for WordPress, specifically targeting versions up to and including 3.0.2. This represents a critical security flaw that exploits the plugin's handling of user-supplied input through its 'ticketshop' shortcode implementation. The issue manifests as a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts into the plugin's output, creating persistent security risks for WordPress installations using this component.
The technical root cause stems from insufficient input sanitization and output escaping mechanisms within the plugin's shortcode processing functionality. When administrators or users with contributor-level privileges or higher utilize the 'ticketshop' shortcode with malicious attributes, the plugin fails to properly validate or escape the input data before rendering it in web pages. This inadequate data handling creates a pathway for attackers to inject persistent JavaScript code that executes whenever legitimate users access pages containing the compromised shortcode. The vulnerability operates at the application layer and specifically targets the WordPress content management system's shortcode execution engine.
The operational impact of this vulnerability extends beyond simple script injection, as it enables authenticated attackers to perform various malicious activities within the compromised WordPress environment. Attackers can leverage this vulnerability to steal session cookies, redirect users to malicious websites, deface pages, or even escalate their privileges within the WordPress installation. The stored nature of the vulnerability means that once injected, the malicious scripts persist indefinitely until manually removed, making it particularly dangerous for long-running WordPress installations. This vulnerability directly violates security principles outlined in the OWASP Top Ten, specifically addressing the risk of cross-site scripting attacks that can lead to complete system compromise.
Mitigation strategies for CVE-2024-11784 should prioritize immediate plugin updates to versions that address the input sanitization issues, as this represents the most effective defense against the vulnerability. Administrators should implement comprehensive access controls, limiting contributor-level privileges to trusted users only, and consider implementing web application firewalls to detect and block malicious shortcode parameters. The vulnerability aligns with CWE-79, which classifies cross-site scripting flaws, and maps to ATT&CK technique T1566 for social engineering through malicious content injection. Regular security audits of WordPress plugins and maintaining updated security practices remain essential defensive measures against similar vulnerabilities in the WordPress ecosystem.