CVE-2012-4391 in ownCloud
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in core/ajax/appconfig.php in ownCloud before 4.0.7 allows remote attackers to hijack the authentication of administrators for requests that edit the app configurations.
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Analysis
by VulDB Data Team • 03/31/2025
The CVE-2012-4391 vulnerability represents a critical cross-site request forgery flaw in the ownCloud file sharing platform that affected versions prior to 4.0.7. This vulnerability resides within the core/ajax/appconfig.php file, which serves as a critical component for managing application configurations within the ownCloud ecosystem. The flaw enables remote attackers to exploit the platform's authentication mechanisms by crafting malicious requests that appear to originate from authenticated administrator sessions. This particular vulnerability demonstrates the dangerous implications of inadequate CSRF protection in web applications that handle administrative functions, as it directly undermines the integrity of the authentication system.
The technical implementation of this vulnerability stems from the absence of proper CSRF tokens or validation mechanisms within the appconfig.php endpoint. When administrators interact with the application configuration interface, the system fails to verify that requests originate from legitimate administrative sessions rather than maliciously crafted web pages. Attackers can exploit this weakness by embedding malicious JavaScript code or leveraging social engineering techniques to trick administrators into visiting compromised websites that automatically submit requests to the vulnerable ownCloud instance. The vulnerability specifically targets the administrative configuration endpoints, making it particularly dangerous as it allows attackers to modify critical application settings without proper authorization.
The operational impact of this vulnerability extends far beyond simple data manipulation, as it provides attackers with the capability to fundamentally alter the platform's configuration and potentially gain deeper access to the system. An attacker who successfully exploits this CSRF vulnerability could modify application settings, disable security features, or even change administrator credentials, effectively compromising the entire ownCloud instance. The risk is amplified because administrators typically maintain elevated privileges and often interact with the platform in trusted environments, making them more susceptible to such attacks. This vulnerability directly maps to CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in software systems, and aligns with ATT&CK technique T1531 for Establishing Persistence through Application Configuration Changes.
Organizations utilizing vulnerable versions of ownCloud face significant operational risks, including potential data breaches, unauthorized access to sensitive files, and complete compromise of the file sharing infrastructure. The vulnerability's impact is particularly severe in enterprise environments where ownCloud serves as a critical collaboration platform, as administrators may unknowingly execute malicious requests while browsing compromised websites or interacting with phishing campaigns. Mitigation strategies include immediate deployment of the patched version 4.0.7 or later, implementation of proper CSRF token validation mechanisms, and enhanced security awareness training for administrators. Additionally, network-level protections such as web application firewalls and strict access controls should be implemented to reduce the attack surface and prevent exploitation attempts. The vulnerability serves as a stark reminder of the importance of implementing robust CSRF protection mechanisms in all web applications, particularly those handling administrative functions and sensitive data operations.