CVE-2024-1677 in Print Labels with Barcodes Plugin
Summary
by MITRE • 05/02/2024
The Print Labels with Barcodes. Create price tags, product labels, order labels for WooCommerce plugin for WordPress is vulnerable to unauthorized access of data, modification of data, and loss of data due to an improper capability check on 42 separate AJAX functions in all versions up to, and including, 3.4.6. This makes it possible for authenticated attackers, with subscriber access and above, to fully control the plugin which includes the ability to modify plugin settings and profiles, and create, edit, retrieve, and delete templates and barcodes.
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Analysis
by VulDB Data Team • 06/06/2025
The vulnerability identified as CVE-2024-1677 affects the Print Labels with Barcodes plugin for WooCommerce, a widely used WordPress extension that enables users to generate various types of labels and barcodes for e-commerce operations. This plugin serves as a critical component in inventory management and product labeling workflows for numerous online retailers. The vulnerability stems from inadequate access control mechanisms within the plugin's implementation, specifically manifesting through improper capability checks across forty-two distinct AJAX endpoints. These endpoints handle core functionality related to template management, barcode generation, and plugin configuration, making the vulnerability particularly concerning given the broad scope of operations affected.
The technical flaw represents a classic privilege escalation vulnerability where authenticated users with subscriber-level access or higher can exploit the missing capability checks to gain unauthorized administrative control over the plugin's functionality. This improper capability validation occurs at the application layer, specifically within the WordPress AJAX handling system where the plugin fails to verify whether the requesting user possesses sufficient permissions for each specific action. The vulnerability aligns with CWE-284, which describes improper access control, and demonstrates how insufficient authorization checks can lead to complete system compromise. Attackers can leverage this weakness to manipulate plugin settings, modify user profiles, and perform destructive operations including template deletion, barcode manipulation, and data retrieval that should be restricted to administrators only.
The operational impact of this vulnerability extends beyond simple data exposure, as it enables attackers to fundamentally alter the plugin's behavior and potentially compromise the entire WooCommerce store's labeling infrastructure. An attacker with subscriber access can create malicious templates that might be used for phishing or social engineering attacks, modify existing barcode configurations to cause inventory discrepancies, or delete critical templates that could disrupt business operations. The ability to fully control plugin settings and profiles creates a persistent threat vector that could be exploited for extended periods without detection. This vulnerability particularly affects businesses that rely heavily on automated labeling systems for inventory management, order processing, and product identification, potentially leading to significant operational disruption and financial loss.
Mitigation strategies should prioritize immediate plugin updates to versions that address the capability check vulnerabilities, as this represents the most direct solution to the identified flaw. Organizations should implement additional security measures including role-based access control reviews to ensure that users with subscriber-level access cannot perform administrative functions, and network-level restrictions to limit access to plugin endpoints. The implementation of Web Application Firewall rules to monitor and block suspicious AJAX requests can provide additional defense-in-depth layers. Security monitoring should include regular audits of plugin access logs and user activity to detect unauthorized manipulation of labeling systems. Organizations should also consider implementing the principle of least privilege for WordPress user accounts, ensuring that users only possess the minimum permissions necessary for their specific roles. This vulnerability highlights the importance of regular security assessments and proper access control implementation in WordPress plugin development, aligning with ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting, as attackers could potentially use this vulnerability to establish persistent access to the e-commerce platform.