CVE-2024-3734 in FOX Plugin
Summary
by MITRE • 05/02/2024
The FOX – Currency Switcher Professional for WooCommerce plugin is vulnerable to Unauthenticated Arbitrary Shortcode Execution in versions up to, and including, 1.4.1.8. This allows unauthenticated attackers to execute arbitrary shortcodes. The severity and exploitability depends on what other plugins are installed and what shortcode functionality they provide.
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Analysis
by VulDB Data Team • 05/29/2024
The vulnerability identified as CVE-2024-3734 affects the FOX - Currency Switcher Professional for WooCommerce plugin, representing a critical security flaw that undermines the integrity of WordPress e-commerce environments. This issue exists within plugin versions up to and including 1.4.1.8, making it a widespread concern for website administrators who have not updated their installations. The vulnerability stems from insufficient input validation and access control mechanisms that allow unauthenticated attackers to exploit the system through the execution of arbitrary shortcodes. Shortcodes in WordPress serve as convenient placeholders that execute specific functions when processed, and their misuse can lead to severe consequences when executed without proper authentication checks.
The technical flaw manifests through improper sanitization of user inputs that are processed by the plugin's shortcode handling mechanism. When an attacker sends a malicious request containing specially crafted shortcode parameters, the system fails to verify the authenticity of the requestor or validate the content of the shortcode being executed. This vulnerability falls under the category of CWE-79 which describes Cross-Site Scripting (XSS) vulnerabilities, although in this case the exploitation extends beyond simple script injection to encompass arbitrary shortcode execution. The weakness creates a pathway for attackers to leverage the plugin's legitimate functionality for malicious purposes, potentially enabling them to execute code, manipulate data, or gain unauthorized access to system resources.
The operational impact of this vulnerability is particularly concerning for WooCommerce stores that rely on the FOX Currency Switcher Professional plugin, as it provides attackers with a straightforward method to compromise website integrity without requiring any authentication credentials. The severity of exploitation varies significantly based on the presence of other plugins that may contain additional shortcode functionality or vulnerable components within the WordPress ecosystem. Attackers can potentially chain this vulnerability with other weaknesses to escalate privileges, extract sensitive information, or even establish persistent backdoors within the affected systems. The unauthenticated nature of the attack means that any visitor to the website can potentially exploit this vulnerability, making it especially dangerous for high-traffic e-commerce platforms where the attack surface remains constantly exposed.
Mitigation strategies for CVE-2024-3734 primarily focus on immediate plugin updates to versions that address the identified security flaw, as developers have likely implemented proper input validation and authentication checks. Website administrators should conduct comprehensive security audits to identify all instances of the vulnerable plugin across their systems and ensure that all installations are updated to the latest secure versions. Additionally, implementing proper access controls and monitoring mechanisms can help detect unusual shortcode execution patterns that may indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.008 which covers 'Command and Scripting Interpreter: PowerShell', as the arbitrary shortcode execution can effectively serve similar malicious purposes by enabling command execution within the WordPress environment. Organizations should also consider implementing web application firewalls and content delivery network protections to detect and block malicious requests targeting this specific vulnerability pattern.