CVE-2013-2703 in Facebook Members
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in the Facebook Members plugin before 5.0.5 for WordPress allows remote attackers to hijack the authentication of administrators for requests that modify this plugin s settings.
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Analysis
by VulDB Data Team • 02/18/2018
The CVE-2013-2703 vulnerability represents a critical cross-site request forgery flaw within the Facebook Members plugin for WordPress systems. This vulnerability affects versions prior to 5.0.5 and creates a significant security risk by allowing remote attackers to exploit the authentication mechanisms of administrative users. The flaw specifically targets the plugin's settings modification functionality, enabling malicious actors to perform unauthorized administrative actions without proper authentication.
The technical implementation of this CSRF vulnerability stems from the absence of proper anti-CSRF token validation within the plugin's administrative interfaces. When administrators interact with the plugin's settings pages, the system fails to verify that requests originate from legitimate administrative sessions. This omission creates a pathway for attackers to craft malicious requests that appear to come from authenticated administrators, effectively bypassing the authentication layer. The vulnerability operates at the application layer and directly impacts the integrity of administrative operations within WordPress environments.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it allows attackers to modify critical plugin settings that can affect user data, social media integration, and overall site functionality. Administrators may unknowingly execute malicious commands that alter Facebook integration parameters, user access controls, or other configuration elements. This type of vulnerability directly violates the principle of least privilege and can lead to complete compromise of the affected WordPress installation. The attack vector is particularly concerning as it requires minimal user interaction beyond visiting a malicious website or clicking on a crafted link, making it highly exploitable in real-world scenarios.
From a cybersecurity perspective, this vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses in web applications. The flaw also maps to several ATT&CK techniques including T1078 for valid accounts and T1566 for phishing campaigns that could leverage this vulnerability. Organizations running vulnerable versions of the Facebook Members plugin face significant risk of unauthorized administrative access, potential data breaches, and complete compromise of their WordPress installations. The vulnerability demonstrates the critical importance of implementing proper input validation and anti-CSRF measures in web applications, particularly those handling administrative functions.
Mitigation strategies for CVE-2013-2703 primarily focus on immediate plugin updates to version 5.0.5 or later, which contain the necessary security patches. System administrators should also implement additional protective measures such as monitoring for unauthorized administrative changes, implementing web application firewalls, and conducting regular security audits of installed plugins. Organizations should establish robust patch management processes to ensure timely updates of all WordPress components, as this vulnerability highlights the ongoing need for vigilance in maintaining secure web application environments. The incident underscores the importance of adhering to security best practices including regular security assessments and maintaining current software versions to protect against known vulnerabilities.