CVE-2024-11135 in Eventer Plugin
Summary
by MITRE • 01/28/2025
The Eventer plugin for WordPress is vulnerable to SQL Injection via the 'event' parameter in the 'eventer_get_attendees' function in all versions up to, and including, 3.9.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
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Analysis
by VulDB Data Team • 01/31/2025
The Eventer plugin for WordPress represents a widely used tool for managing events and attendee registrations within the WordPress ecosystem. This particular vulnerability affects all versions up to and including 3.9.8, making it a significant concern for thousands of WordPress installations that rely on this plugin for event management functionality. The vulnerability stems from improper input validation and sanitization practices within the plugin's core codebase, specifically within the eventer_get_attendees function that handles attendee data retrieval operations.
The technical flaw manifests through insufficient escaping of the 'event' parameter within the SQL query execution flow. When an attacker supplies malicious input through this parameter, the plugin fails to properly sanitize or prepare the data before incorporating it into database queries. This lack of input sanitization creates an environment where SQL injection attacks can occur without authentication requirements, allowing attackers to manipulate the underlying database queries through crafted input. The vulnerability specifically targets the eventer_get_attendees function which processes attendee information requests, making it a critical attack vector for database enumeration and data extraction.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with the capability to extract sensitive information from the WordPress database including user credentials, event details, and potentially other stored data within the affected database. Since the vulnerability does not require authentication, it represents a significant risk for any website running the affected plugin version, as attackers can exploit it remotely without needing valid user credentials or administrative access. This makes the vulnerability particularly dangerous in environments where the plugin is widely deployed and may be exposed to public internet access.
From a cybersecurity perspective, this vulnerability maps directly to CWE-89 which specifically addresses SQL injection flaws in software applications. The weakness represents a classic example of inadequate input validation combined with improper output escaping, creating a pathway for malicious SQL code execution. Security practitioners should consider this vulnerability when conducting risk assessments and implementing defensive measures within WordPress environments. The ATT&CK framework would categorize this as a technique involving SQL injection within the credential access and reconnaissance phases, potentially enabling further attack progression through database exploitation and information gathering.
Mitigation strategies should prioritize immediate plugin updates to versions that address the SQL injection vulnerability, as this represents the most effective solution. Organizations should also implement web application firewalls that can detect and block malicious SQL injection patterns targeting the specific vulnerable parameter. Additionally, database access controls should be reviewed to ensure that the WordPress database user account has minimal required permissions, limiting potential damage from successful exploitation. Regular security audits of WordPress plugins and themes should be conducted to identify similar vulnerabilities and ensure that all third-party components are properly maintained and updated.