CVE-2008-2348 in MeltingIce File System
Summary
by MITRE
MeltingIce File System 1.0 allows remote attackers to bypass application authentication, create new user accounts, and exceed application quotas via a direct request to admin/adduser.php.
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Analysis
by VulDB Data Team • 10/24/2024
The MeltingIce File System 1.0 vulnerability represents a critical authentication bypass flaw that fundamentally undermines the security posture of the affected application. This vulnerability resides in the administrative interface component of the file system, specifically within the admin/adduser.php endpoint which serves as a direct access point for user account creation and management. The flaw stems from inadequate input validation and authentication checks that fail to properly verify the privileges of incoming requests, allowing unauthenticated attackers to exploit the system's administrative functions. The vulnerability is particularly concerning because it operates at the application layer, where attackers can directly manipulate HTTP requests to gain elevated privileges without requiring legitimate credentials or prior access to the system.
The technical implementation of this vulnerability demonstrates a classic lack of proper access control mechanisms within the application's security architecture. When an attacker sends a direct request to the admin/adduser.php endpoint, the system fails to validate whether the requesting entity possesses administrative privileges or proper authentication credentials. This represents a failure in the application's authorization model, where the system should enforce strict access controls before permitting any administrative operations. The vulnerability can be categorized under CWE-285, which addresses improper authorization issues in software applications, and aligns with ATT&CK technique T1078.101 which covers valid accounts with administrative privileges. The flaw essentially creates a backdoor pathway through which malicious actors can escalate their privileges and assume full administrative control over the file system.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as it provides attackers with comprehensive control over the affected system's user management capabilities. Successful exploitation enables attackers to create new user accounts with arbitrary privileges, effectively allowing them to establish persistent access points within the system. Additionally, the vulnerability permits attackers to exceed application quotas, which can lead to resource exhaustion and potential denial of service conditions. The ability to bypass authentication also means that attackers can manipulate the file system's administrative functions to modify existing user accounts, delete files, or alter system configurations. This vulnerability directly violates fundamental security principles of least privilege and principle of least authority, as it allows unauthorized entities to perform operations that should be restricted to legitimate administrators only.
Mitigation strategies for this vulnerability must address both the immediate security gap and the underlying architectural issues that enabled the flaw. The primary recommendation involves implementing robust authentication and authorization checks at every administrative endpoint, ensuring that all requests to admin/adduser.php and similar administrative functions require proper authentication tokens or session validation. Security controls should include input validation to reject malformed requests, proper session management with secure token generation, and role-based access control enforcement. Organizations should also implement network segmentation to restrict direct access to administrative endpoints from external networks, and deploy web application firewalls to monitor and filter suspicious requests. The vulnerability highlights the importance of following secure coding practices and conducting regular security assessments, particularly focusing on authentication and authorization mechanisms. From an ATT&CK perspective, this vulnerability underscores the need for defensive measures such as monitoring for unusual administrative activity patterns and implementing principle of least privilege configurations to limit the potential impact of such exploitation attempts.