CVE-2006-2514 in Photo Gallery
Summary
by MITRE
Coppermine galleries before 1.4.6, when running on Apache with mod_mime installed, allows remote attackers to upload arbitrary files via a filename with multiple file extensions.
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Analysis
by VulDB Data Team • 09/06/2017
The vulnerability described in CVE-2006-2514 represents a critical file upload security flaw affecting Coppermine gallery software versions prior to 1.4.6. This issue specifically manifests when the gallery operates on Apache web servers with the mod_mime module enabled, creating a dangerous condition where attackers can bypass normal file validation mechanisms. The core problem stems from the software's inadequate handling of filenames containing multiple extensions, which allows malicious actors to exploit the system's file type detection logic.
The technical exploitation of this vulnerability relies on the Apache server's mod_mime module behavior, which processes file extensions in a manner that can be manipulated by attackers. When a user uploads a file with multiple extensions such as image.jpg.php, the system may incorrectly identify the file based on the last extension rather than the actual file content. This misidentification occurs because Coppermine's file validation logic does not properly sanitize or validate filenames containing multiple dots and extensions, creating a pathway for attackers to upload executable scripts or malicious files that would otherwise be rejected by standard security measures.
The operational impact of this vulnerability is severe and multifaceted, potentially allowing remote code execution and complete system compromise. Attackers can upload web shells, backdoor scripts, or other malicious payloads that persist on the server, enabling them to execute arbitrary commands, steal sensitive data, or establish persistent access to the compromised system. The vulnerability affects not only the gallery's functionality but also the broader server infrastructure, as successful exploitation can lead to privilege escalation and lateral movement within the network. This type of vulnerability falls under CWE-434, which specifically addresses Unrestricted Upload of File with Dangerous Type, a well-documented weakness in web application security.
The attack vector for this vulnerability aligns with techniques described in the MITRE ATT&CK framework under T1190 - Exploit Public-Facing Application, where attackers target web applications to gain initial access to systems. The flaw demonstrates poor input validation and inadequate security controls that are commonly exploited in web application attacks. Organizations running affected versions of Coppermine galleries face significant risk of unauthorized access and data breaches, particularly in environments where these galleries are publicly accessible or integrated with other systems.
Mitigation strategies for this vulnerability should include immediate patching to version 1.4.6 or later, which contains proper file extension validation and sanitization mechanisms. System administrators should also implement additional security layers such as restricting file upload capabilities, implementing robust file type checking, and configuring Apache servers to properly handle file extensions. Network segmentation and monitoring solutions should be deployed to detect anomalous file upload activities. The vulnerability underscores the importance of proper security testing and input validation in web applications, as highlighted in industry best practices such as OWASP Top Ten and NIST Cybersecurity Framework guidelines. Organizations should conduct comprehensive security assessments to identify similar vulnerabilities in other applications and implement automated patch management processes to prevent exploitation of known security flaws.