CVE-2016-11010 in wp-invoice Plugin
Summary
by MITRE
The wp-invoice plugin before 4.1.1 for WordPress has incorrect access control over wpi_twocheckout payer metadata updates.
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Analysis
by VulDB Data Team • 12/26/2023
The wp-invoice plugin vulnerability CVE-2016-11010 represents a critical access control flaw that undermines the security posture of WordPress installations. This vulnerability specifically affects versions prior to 4.1.1 of the wp-invoice plugin, which is widely used for invoice management and payment processing within the WordPress ecosystem. The issue stems from improper validation of user permissions when handling payment metadata updates through the TwoCheckout payment gateway integration, creating a pathway for unauthorized modifications to sensitive financial data.
The technical flaw manifests in the plugin's failure to properly verify user privileges before allowing modifications to wpi_twocheckout payer metadata. This access control bypass occurs when the plugin processes update requests for payment information, particularly those related to customer billing details and transaction records. Attackers can exploit this weakness to manipulate payment metadata without possessing the appropriate administrative credentials or authorization levels. The vulnerability operates at the application level and specifically targets the plugin's handling of data updates through the TwoCheckout payment processing interface, where the plugin fails to implement proper authentication checks.
The operational impact of this vulnerability extends beyond simple data modification, potentially enabling financial fraud and data breaches within WordPress environments. An attacker with access to the vulnerable plugin could alter customer payment information, modify transaction records, or manipulate billing details to redirect payments to unauthorized accounts. This creates significant risk for businesses relying on the plugin for payment processing, as it undermines the integrity of their financial transaction data and could result in monetary losses. The vulnerability particularly affects e-commerce sites and businesses using WordPress for invoice management, where the compromise of payment metadata could lead to substantial financial damage and regulatory compliance issues.
The vulnerability aligns with CWE-284, which addresses improper access control in software systems, and demonstrates characteristics consistent with ATT&CK technique T1078 which covers valid accounts and privilege escalation. Organizations should immediately update to wp-invoice plugin version 4.1.1 or later to remediate this issue, as the patch addresses the core access control flaw by implementing proper user permission checks before allowing metadata modifications. Additional mitigations include restricting file permissions on the plugin directory, implementing network-level access controls to limit exposure, and conducting regular security audits of installed plugins to identify similar vulnerabilities. System administrators should also monitor for suspicious activity related to payment processing and invoice management functions, as unauthorized modifications to payment metadata may be detectable through proper logging and monitoring controls.