CVE-2025-2163 in Comments Plugin
Summary
by MITRE • 03/15/2025
The Zoorum Comments plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.9. This is due to missing or incorrect nonce validation on the zoorum_set_options() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 03/15/2025
The vulnerability identified as CVE-2025-2163 affects the Zoorum Comments plugin for WordPress, specifically targeting versions up to and including 0.9. This represents a critical security flaw that undermines the integrity of WordPress installations using this plugin. The issue stems from insufficient input validation mechanisms within the plugin's core functionality, creating a pathway for malicious actors to exploit the system's trust model. The vulnerability manifests through a lack of proper nonce validation, which serves as a cryptographic token designed to prevent unauthorized requests from being processed by the application's backend systems.
The technical flaw resides in the zoorum_set_options() function where the plugin fails to properly validate nonce tokens that should be required for any administrative setting modifications. This function operates without proper authentication checks, allowing any external party to craft malicious requests that appear legitimate to the WordPress system. The absence of nonce validation creates a scenario where attackers can manipulate plugin settings through forged HTTP requests, potentially leading to complete system compromise. This vulnerability is classified under CWE-352, which specifically addresses Cross-Site Request Forgery issues in web applications, where the application fails to verify that requests originate from legitimate sources.
The operational impact of this vulnerability extends beyond simple data manipulation, as it provides attackers with the capability to inject malicious web scripts into the WordPress environment. An unauthenticated attacker can exploit this weakness to modify plugin configurations, potentially redirecting users to malicious sites or injecting harmful code that could compromise visitor browsers. The attack vector requires social engineering to trick administrators into clicking malicious links, but once executed, the consequences can be severe. This vulnerability aligns with ATT&CK technique T1566, which involves social engineering tactics to manipulate users into performing actions that compromise system security. The compromise of plugin settings can lead to persistent backdoors, data exfiltration, and further exploitation of the WordPress installation.
Mitigation strategies for this vulnerability should focus on immediate remediation through plugin updates to versions that properly implement nonce validation. System administrators must ensure all WordPress installations are regularly updated to prevent exploitation of known vulnerabilities. Additional protective measures include implementing proper access controls, monitoring for unauthorized configuration changes, and conducting regular security audits of installed plugins. Organizations should also consider network-level protections such as web application firewalls that can detect and block suspicious requests attempting to exploit CSRF vulnerabilities. The implementation of proper input validation and output encoding practices, as recommended by OWASP security guidelines, will help prevent similar issues in future plugin developments and strengthen overall application security posture.