CVE-2014-9438 in vBulletin
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in the Moderator Control Panel in vBulletin 4.2.2 allows remote attackers to hijack the authentication of administrators for requests that (1) ban a user via the username parameter in a dobanuser action to modcp/banning.php or (2) unban a user, (3) modify user profiles, edit a (4) post or (5) topic, or approve a (6) post or (7) topic via unspecified vectors.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/10/2022
The CVE-2014-9438 vulnerability represents a critical cross-site request forgery flaw within the vBulletin 4.2.2 Moderator Control Panel, exposing administrative functions to unauthorized manipulation by remote attackers. This vulnerability specifically targets the modcp/banning.php endpoint and other administrative interfaces, creating a dangerous attack surface where malicious actors can exploit the lack of proper CSRF protection mechanisms. The flaw allows attackers to execute administrative actions without proper authentication, effectively enabling them to hijack administrator sessions and perform unauthorized operations on the forum platform.
The technical implementation of this vulnerability stems from the absence of anti-CSRF tokens or other validation mechanisms in the affected administrative endpoints. When administrators navigate to the Moderator Control Panel, the application fails to verify the authenticity of requests originating from legitimate administrative sessions. Attackers can construct malicious web pages or email attachments that, when visited by authenticated administrators, automatically submit requests to the vulnerable modcp/banning.php script. The vulnerability specifically affects actions including user banning and unbanning through username parameters, as well as more extensive administrative functions such as profile modifications, post and topic editing, and content approval processes.
The operational impact of this vulnerability extends beyond simple user account manipulation to encompass complete administrative control over the forum platform. An attacker who successfully exploits this CSRF vulnerability can permanently ban legitimate users, modify user profiles to gain unauthorized access, edit or delete forum content, and approve malicious posts or topics. This creates a comprehensive attack vector that allows for both disruptive and malicious activities, potentially leading to complete forum compromise. The vulnerability is particularly dangerous because it targets the most privileged administrative functions, enabling attackers to maintain persistent control over the platform and execute long-term malicious activities.
Organizations affected by CVE-2014-9438 should immediately implement mitigations including the deployment of anti-CSRF tokens in all administrative endpoints, proper session management with secure cookie attributes, and comprehensive input validation for all administrative actions. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistent threat capabilities, as attackers can leverage the administrative access to establish lasting presence within the compromised environment. The recommended remediation strategy includes applying the official vBulletin security patches, implementing proper CSRF protection mechanisms, and conducting thorough security audits of all administrative interfaces to prevent similar vulnerabilities from being introduced in future versions of the software.