CVE-2009-4670 in RoomPHPlanning
Summary
by MITRE
admin/delitem.php in RoomPHPlanning 1.6 does not require authentication, which allows remote attackers to (1) delete arbitrary users via the user parameter or (2) delete arbitrary rooms via the room parameter.
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Analysis
by VulDB Data Team • 05/01/2026
The vulnerability identified as CVE-2009-4670 resides within the RoomPHPlanning 1.6 web application, specifically in the admin/delitem.php script. This represents a critical authentication bypass flaw that fundamentally compromises the application's access control mechanisms. The vulnerability stems from the absence of proper authentication checks within the delete functionality, allowing unauthenticated remote attackers to exploit the system's administrative capabilities. The flaw manifests when attackers can manipulate the user and room parameters to target arbitrary users or rooms for deletion, effectively providing them with full administrative control over the application's user and room data.
This vulnerability directly maps to CWE-287, which addresses improper authentication issues in software systems. The flaw constitutes a severe authorization bypass where the application fails to verify the identity and privileges of users attempting to perform administrative operations. The absence of authentication requirements creates an unrestricted access point that violates fundamental security principles of least privilege and access control. Attackers can exploit this weakness from any remote location without requiring valid credentials, making the vulnerability particularly dangerous in publicly accessible environments.
The operational impact of this vulnerability extends far beyond simple data deletion. Remote attackers can completely dismantle the application's user management system by removing arbitrary users, potentially disrupting legitimate user access and creating denial of service conditions. Additionally, the ability to delete arbitrary rooms compromises the application's core functionality, as it allows attackers to remove critical scheduling resources and potentially cause operational chaos within the room planning system. The vulnerability affects the confidentiality, integrity, and availability of the application's data, creating a comprehensive security breach that could result in significant business disruption.
From an attack perspective, this vulnerability aligns with ATT&CK technique T1078 for valid accounts and T1485 for data destruction, as attackers can leverage the lack of authentication to perform destructive operations. The vulnerability can be exploited through simple HTTP requests that manipulate the user and room parameters, making it easily exploitable by attackers with minimal technical expertise. Security practitioners should consider this vulnerability as a critical threat that requires immediate remediation, as it provides attackers with direct administrative capabilities that can be used for data manipulation, system disruption, and potential further exploitation.
The recommended mitigations include implementing robust authentication mechanisms for all administrative endpoints, ensuring that proper session management and access control checks are enforced before allowing any delete operations. The application should enforce mandatory authentication for the delitem.php script and validate user privileges before executing any administrative actions. Additionally, input validation and parameter sanitization should be implemented to prevent parameter manipulation attacks. Regular security audits and penetration testing should be conducted to identify similar authentication bypass vulnerabilities, and the application should be updated to the latest version that addresses this specific flaw. Organizations should also implement network segmentation and monitoring to detect unauthorized access attempts to administrative interfaces.