CVE-2012-4752 in ownCloud
Summary
by MITRE
appconfig.php in ownCloud before 4.0.6 does not properly restrict access, which allows remote authenticated users to edit app configurations via unspecified vectors. NOTE: this can be leveraged by unauthenticated remote attackers using CVE-2012-4393.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 03/31/2025
The vulnerability identified as CVE-2012-4752 affects ownCloud versions prior to 4.0.6 and specifically targets the appconfig.php component within the application's codebase. This flaw represents a critical access control weakness that undermines the security model of the platform, allowing malicious actors to manipulate application configurations through improper authorization mechanisms. The vulnerability exists within the application's configuration management system where access restrictions are inadequately enforced, creating a pathway for unauthorized modifications to critical system parameters.
The technical implementation of this vulnerability stems from insufficient input validation and access control checks within the appconfig.php file. When authenticated users attempt to modify application configurations, the system fails to properly verify whether the requesting user possesses the necessary privileges for such operations. This weakness creates a scenario where legitimate authenticated users can exploit the system to perform unauthorized configuration changes, while the vulnerability's broader implications allow for exploitation by unauthenticated attackers through the chained vulnerability CVE-2012-4393. The unspecified vectors mentioned in the description suggest that the flaw could potentially be exploited through multiple attack paths within the application's architecture.
The operational impact of CVE-2012-4752 extends beyond simple configuration manipulation, as it provides attackers with the capability to fundamentally alter how applications function within the ownCloud environment. This could enable malicious actors to disable security features, modify user permissions, or introduce backdoors that persist across system restarts. The vulnerability's exploitation can result in complete compromise of the application's integrity and availability, potentially leading to data breaches, privilege escalation, or complete system takeover. Organizations relying on vulnerable versions of ownCloud face significant risk of unauthorized access and configuration tampering that could go undetected for extended periods.
Security professionals should implement immediate mitigation strategies including upgrading to ownCloud version 4.0.6 or later, which contains the necessary patches to address the access control flaws. Additional defensive measures include implementing network segmentation to limit access to administrative interfaces, enabling multi-factor authentication for all administrative accounts, and conducting comprehensive security audits of application configurations. The vulnerability aligns with CWE-284, which describes improper access control issues, and can be mapped to ATT&CK technique T1068, involving the use of exploits for privilege escalation. Organizations should also consider implementing web application firewalls and monitoring for suspicious configuration change activities to detect potential exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar access control weaknesses in related systems and prevent similar incidents from occurring in the broader ecosystem.