CVE-2024-11276 in PDF Builder for WooCommerce Plugin
Summary
by MITRE • 12/06/2024
The PDF Builder for WooCommerce. Create invoices,packing slips and more plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'page' parameter in all versions up to, and including, 1.2.136 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 02/21/2025
The vulnerability identified as CVE-2024-11276 affects the PDF Builder for WooCommerce plugin, a popular WordPress extension used for generating invoices, packing slips, and other business documents. This plugin operates within the WordPress ecosystem and interacts with various user inputs through its web interface. The security flaw manifests in the plugin's handling of the 'page' parameter, which is processed through the WordPress admin interface without proper sanitization or output escaping mechanisms. The vulnerability exists in all versions up to and including 1.2.136, making a significant portion of users susceptible to potential attacks.
The technical implementation of this vulnerability stems from the plugin's failure to properly validate and sanitize user-supplied input through the 'page' parameter. When an attacker crafts a malicious URL containing crafted script payloads within this parameter, the plugin processes this input without adequate filtering or escaping before rendering it in the web page context. This creates a classic reflected cross-site scripting vulnerability where malicious scripts are reflected off the web server and executed in the victim's browser. The vulnerability is classified as CWE-79, which specifically addresses Cross-Site Scripting flaws in software applications. The lack of input sanitization means that any data submitted through this parameter is directly incorporated into the HTML output without proper context-aware escaping mechanisms.
The operational impact of this vulnerability is significant for WordPress site administrators and users who rely on the PDF Builder for WooCommerce plugin. Since the vulnerability is accessible to unauthenticated attackers, any user who clicks on a maliciously crafted link containing the exploit can be compromised without requiring any authentication or privileged access. This makes the vulnerability particularly dangerous in environments where administrators or users might be tricked into clicking links in phishing emails, forum posts, or other malicious contexts. The reflected nature of the attack means that the malicious script executes in the victim's browser context, potentially allowing attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect them to malicious websites. This vulnerability directly maps to the ATT&CK technique T1566.001, which involves phishing attacks using malicious links that leverage reflected XSS vulnerabilities.
The security implications extend beyond simple script execution as the vulnerability could enable more sophisticated attacks. An attacker could potentially craft payloads that steal administrator session cookies, allowing for complete compromise of the WordPress installation. The vulnerability also provides a potential entry point for attackers to escalate privileges within the WordPress environment, especially if the targeted users have administrative capabilities. Given that WooCommerce is a widely used e-commerce platform, the potential for financial loss and data theft increases significantly when this vulnerability is exploited. The attack vector is particularly concerning because it requires minimal user interaction beyond clicking a link, making it highly effective in social engineering campaigns. Mitigation efforts should focus on immediate plugin updates to versions that properly sanitize input parameters and implement robust output escaping mechanisms, while also considering temporary network-level protections to block malicious traffic patterns.