CVE-2022-1609 in school-management-pro Plugin
Summary
by MITRE • 01/16/2024
The School Management WordPress plugin before 9.9.7 contains an obfuscated backdoor injected in it's license checking code that registers a REST API handler, allowing an unauthenticated attacker to execute arbitrary PHP code on the site.
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Analysis
by VulDB Data Team • 06/02/2025
The vulnerability identified as CVE-2022-1609 affects the School Management WordPress plugin, specifically versions prior to 9.9.7, presenting a critical security risk through the inclusion of an obfuscated backdoor within the plugin's license checking functionality. This backdoor represents a sophisticated attack vector that leverages the WordPress REST API to provide unauthorized code execution capabilities. The malicious code is strategically embedded within the legitimate license verification process, making it particularly difficult to detect through standard security scanning methods and traditional code review practices.
The technical implementation of this vulnerability involves the registration of a custom REST API endpoint that bypasses normal authentication mechanisms within the WordPress framework. This endpoint operates through the WordPress REST API infrastructure, which is designed to provide programmatic access to site resources and functions. The backdoor specifically targets the license checking code path, where legitimate plugin functionality intersects with malicious code execution capabilities. The obfuscation techniques employed make static analysis challenging, as the malicious code is disguised to appear as legitimate license verification logic, potentially utilizing encoding, string concatenation, or other obfuscation methods that obscure the true intent of the code.
From an operational perspective, this vulnerability creates a severe risk for WordPress site administrators and end users who rely on the School Management plugin for educational institution management. The unauthenticated nature of the attack means that any visitor to the compromised site can potentially execute arbitrary PHP code, leading to complete system compromise. Attackers can leverage this backdoor to perform various malicious activities including data exfiltration, installation of additional malware, creation of backdoors for persistent access, or even use the compromised site as part of a botnet. The impact extends beyond individual site compromise to potentially affect entire educational networks or institutional databases that rely on the plugin for their operations.
The vulnerability aligns with CWE-489, which addresses the presence of dead code or code that is not properly removed from software, and represents a classic example of a backdoor or backdoor mechanism within legitimate software. It also demonstrates characteristics consistent with ATT&CK technique T1505.003, which involves the use of third-party software or libraries for persistence and execution. Organizations should prioritize immediate patching of affected systems to address this vulnerability, as the obfuscated nature of the backdoor makes it particularly dangerous. The recommended mitigation strategy includes updating to version 9.9.7 or later of the School Management plugin, implementing network monitoring for suspicious REST API activity, and conducting thorough security audits of all installed plugins to identify potential similar backdoor implementations. Additionally, administrators should consider implementing web application firewalls and restricting access to REST API endpoints where possible, while maintaining comprehensive logging and monitoring of system activities to detect potential exploitation attempts.