CVE-2007-1451 in GuppY
Summary
by MITRE
GuppY 4.0 allows remote attackers to delete arbitrary files via a direct request to install/install.php, then selecting "Installation propre" (cleanup.php) and then "Suppression des fichiers d installation" (delete.php).
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Analysis
by VulDB Data Team • 08/27/2018
The vulnerability identified as CVE-2007-1451 affects GuppY 4.0, a content management system that suffers from a critical file deletion flaw in its installation process. This vulnerability exists within the installation script architecture where attackers can manipulate the system through direct requests to specific installation files, bypassing normal security controls and access restrictions. The flaw is particularly dangerous because it allows remote attackers to execute arbitrary file deletion operations without proper authentication or authorization mechanisms in place.
The technical implementation of this vulnerability occurs through a specific exploitation path that begins with accessing the install/install.php file directly. Once this initial access point is compromised, attackers can navigate through the installation interface to select the "Installation propre" option which leads to the cleanup.php script. The final stage involves selecting the "Suppression des fichiers d installation" option that triggers the delete.php script, enabling complete removal of installation files from the target system. This sequential manipulation demonstrates a lack of proper input validation and access control checks within the application's installation workflow.
From an operational impact perspective, this vulnerability creates a severe security risk for systems running GuppY 4.0 as it allows attackers to delete critical system files, potentially leading to complete system compromise or service disruption. The ability to perform arbitrary file deletion remotely means that attackers can target not only installation files but potentially other sensitive components of the application or underlying system. This vulnerability directly relates to CWE-22, which describes improper limitation of a pathname to a restricted directory, and CWE-284, which addresses inadequate access control mechanisms. The exploitation pattern aligns with ATT&CK technique T1059, where adversaries use command and control channels to execute malicious code, and T1486, which involves data destruction through file deletion.
The security implications extend beyond simple file removal as this vulnerability can be leveraged as a stepping stone for more sophisticated attacks. Attackers can use the file deletion capability to remove security patches, backup files, or other critical components that would otherwise prevent further exploitation. The vulnerability's remote nature means that no physical access or local privileges are required, making it particularly dangerous for web applications that are publicly accessible. Organizations using GuppY 4.0 should immediately implement mitigations including disabling or removing the installation scripts from production environments, implementing proper access controls, and applying security patches if available. The vulnerability also highlights the importance of proper input validation and access control implementation in web applications, as the lack of these controls in the installation process created the conditions for this exploitation path to exist.