CVE-2024-54383: WooCommerce PDF Vouchers Privilege Escalation

CVE-2024-54383 Overview

An Incorrect Privilege Assignment vulnerability has been identified in the WooCommerce PDF Vouchers plugin developed by wpweb. This security flaw allows attackers to escalate privileges within WordPress environments running affected versions of the plugin. The vulnerability stems from broken authentication mechanisms that can be exploited to gain unauthorized elevated access to the WordPress installation.

Critical Impact

Attackers can exploit this privilege escalation vulnerability to gain administrative access to WordPress sites, potentially leading to complete site compromise, data theft, and malicious content injection.

Affected Products

• wpwebelite woocommerce_pdf_vouchers (versions prior to 4.9.9)
• WordPress installations running WooCommerce PDF Vouchers plugin
• E-commerce sites utilizing PDF voucher functionality

Discovery Timeline

• 2024-12-18 - CVE-2024-54383 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2024-54383

Vulnerability Analysis

This vulnerability is classified under CWE-266 (Incorrect Privilege Assignment), which describes a condition where a product incorrectly assigns or manages privileges for an actor, creating an unintended sphere of control. In the context of WooCommerce PDF Vouchers, the plugin fails to properly validate user privileges during certain authentication workflows, allowing lower-privileged users or unauthenticated attackers to perform actions reserved for administrators.

The broken authentication mechanism in the plugin creates a pathway for privilege escalation attacks. When exploited, attackers can bypass intended access controls and gain elevated privileges within the WordPress administrative interface. This type of vulnerability is particularly dangerous in e-commerce environments where sensitive customer data, payment information, and business operations could be compromised.

Root Cause

The root cause of this vulnerability lies in the plugin's improper implementation of privilege checks during authentication processes. The WooCommerce PDF Vouchers plugin fails to adequately verify user roles and capabilities before granting access to privileged functionality. This incorrect privilege assignment allows attackers to circumvent the intended authorization controls and escalate their access level within the WordPress system.

Attack Vector

The attack vector for CVE-2024-54383 involves exploiting the broken authentication mechanism in the WooCommerce PDF Vouchers plugin. An attacker can leverage this vulnerability to bypass normal authentication flows and gain elevated privileges without proper authorization.

The exploitation typically involves manipulating plugin-specific authentication parameters or exploiting improper session handling to trick the application into granting administrative privileges. Once elevated access is obtained, the attacker can modify site content, access sensitive data, install malicious plugins, or create backdoor administrator accounts for persistent access.

For detailed technical analysis and exploitation methodology, refer to the Patchstack security advisory.

Detection Methods for CVE-2024-54383

Indicators of Compromise

• Unexpected administrator accounts created in WordPress user database
• Unusual login activity or authentication logs showing privilege escalation patterns
• Modifications to site content or plugin settings by non-administrative users
• Suspicious activity logs related to the WooCommerce PDF Vouchers plugin

Detection Strategies

• Monitor WordPress authentication logs for anomalous privilege assignment events
• Implement file integrity monitoring to detect unauthorized changes to plugin files
• Review user role assignments regularly to identify unexpected administrator accounts
• Deploy web application firewall (WAF) rules to detect privilege escalation attempts

Monitoring Recommendations

• Enable comprehensive logging for WordPress authentication and user management events
• Configure alerts for new administrator account creation or role changes
• Monitor HTTP requests to WooCommerce PDF Vouchers plugin endpoints for suspicious patterns
• Implement real-time security scanning for WordPress installations

How to Mitigate CVE-2024-54383

Immediate Actions Required

• Update WooCommerce PDF Vouchers plugin to version 4.9.9 or later immediately
• Audit all WordPress user accounts and remove any unauthorized administrator accounts
• Review recent authentication logs for signs of exploitation
• Consider temporarily disabling the plugin until the update can be applied

Patch Information

The vulnerability has been addressed in WooCommerce PDF Vouchers version 4.9.9. Site administrators should update to this version or later to remediate the security issue. The patch corrects the improper privilege assignment by implementing proper authentication validation and role verification mechanisms.

For additional details, consult the Patchstack vulnerability database entry.

Workarounds

• Implement additional authentication layers such as two-factor authentication for WordPress administrators
• Restrict access to WordPress admin panel using IP allowlisting
• Deploy a web application firewall with rules to detect and block privilege escalation attempts
• Regularly backup site data and maintain incident response procedures

# WordPress plugin update via WP-CLI
wp plugin update woocommerce-pdf-vouchers --version=4.9.9

# Audit user accounts for unauthorized administrators
wp user list --role=administrator --format=table

# Review recent user role changes
wp db query "SELECT * FROM wp_usermeta WHERE meta_key = 'wp_capabilities' ORDER BY umeta_id DESC LIMIT 50"