CVE-2006-6248 in GPhotos
Summary
by MITRE
index.php in GPhotos 1.5 allows remote attackers to obtain sensitive information via an invalid rep parameter, which reveals the full path in an error message.
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Analysis
by VulDB Data Team • 08/09/2018
The vulnerability identified as CVE-2006-6248 affects GPhotos 1.5, a web-based photo management system that allows users to upload, organize, and share photographs online. This particular flaw resides within the index.php file, which serves as the primary entry point for the application's functionality. The vulnerability represents a classic example of information disclosure through improper error handling, where the application fails to sanitize user input before processing it within the system. When an attacker submits an invalid rep parameter to the index.php script, the application generates an error message that inadvertently exposes the full server path where the application is installed. This type of vulnerability falls under the category of CWE-209, which specifically addresses the issue of error messages containing sensitive information, and represents a fundamental security weakness in the application's defensive design.
The technical exploitation of this vulnerability occurs when an attacker manipulates the rep parameter to a value that the application cannot process correctly. The system's error handling mechanism, rather than gracefully managing the invalid input, produces a detailed error message that includes the complete file path of the application on the server. This information disclosure can provide attackers with critical infrastructure details that may aid in subsequent attack phases, such as directory traversal attacks or exploitation of other vulnerabilities. The vulnerability demonstrates poor input validation practices and lacks proper error handling mechanisms that would prevent sensitive system information from being exposed to unauthorized parties. From an operational security perspective, this flaw creates a significant risk as it provides attackers with the exact directory structure of the web server, potentially revealing the operating system type, web server configuration, and application deployment patterns that could be leveraged in more sophisticated attacks.
The impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with foundational knowledge required for advanced exploitation techniques. The exposed full path information can be used in conjunction with other vulnerabilities to craft more targeted attacks, particularly those involving path traversal or local file inclusion exploits. This vulnerability aligns with several ATT&CK techniques including T1083 (File and Directory Discovery) and T1068 (Exploitation for Privilege Escalation), as the information disclosure creates opportunities for attackers to gather intelligence about the target environment. The flaw represents a failure in the principle of least privilege and proper input validation, where the application should have implemented robust error handling that masks sensitive system information while still providing useful feedback to legitimate users. Organizations running GPhotos 1.5 should consider this vulnerability as a critical security concern, particularly in environments where the application is deployed on publicly accessible servers without proper network segmentation or additional security controls.
Mitigation strategies for CVE-2006-6248 should focus on implementing proper input validation and error handling mechanisms within the application code. The recommended approach involves sanitizing all user input parameters before processing them, ensuring that invalid inputs generate generic error messages that do not reveal system information. Additionally, developers should implement comprehensive error handling that logs detailed errors internally while displaying only generic messages to end users. Security patches for GPhotos 1.5 should be applied immediately, and organizations should consider upgrading to newer versions of the application that have addressed this vulnerability. Network-level protections such as web application firewalls can provide additional defense in depth, though these should not be relied upon as the sole mitigation strategy. The vulnerability serves as a reminder of the importance of secure coding practices, particularly around error handling and input validation, which are fundamental requirements for maintaining application security and preventing information disclosure attacks that can compromise entire systems.