CVE-2012-4235 in Com Rsgallery2
Summary
by MITRE
The RSGallery2 (com_rsgallery2) component before 3.2.0 for Joomla! 2.5.x does not place index.html files in image directories, which allows remote attackers to list image filenames via a request for a directory URI.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2012-4235 affects the RSGallery2 component version 3.1.0 and earlier in Joomla installations by providing unauthorized access to the gallery's file system structure and the media content stored within.
The technical implementation of this vulnerability stems from the component's failure to properly secure directory access controls within the Joomla application layer. This occurs because the directory structure lacks proper index.html files that would prevent directory browsing or redirect requests to appropriate application handlers. The vulnerability specifically affects the com_rsgallery2 component, which is designed to manage and display galleries of images within Joomla! sites, but fails to implement basic security measures that would prevent unauthorized directory enumeration. The flaw operates at the web server configuration level where directory access is not properly controlled, allowing attackers to traverse directories and access image files without proper authentication or authorization checks. This represents a classic case of inadequate input validation and access control implementation that violates fundamental security principles.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to gain knowledge about the media assets stored within the gallery, potentially revealing sensitive content or providing attack surface for further exploitation. An attacker can systematically enumerate all images in the gallery by making directory requests, which may expose copyrighted material, private photos, or other sensitive media content. The vulnerability also provides attackers with a comprehensive view of the gallery's file structure, enabling them to craft more targeted attacks against specific files or directory access patterns. Additionally, the exposure of image filenames may reveal information about the gallery's organization, content types, or even potential naming conventions that could be exploited in social engineering attacks or other related vulnerabilities. This information disclosure can significantly weaken the overall security posture of the affected Joomla! installation.
Organizations affected by this vulnerability should immediately implement multiple mitigation strategies to protect their systems from exploitation. The primary remediation involves upgrading the RSGallery2 component to version 3.2.0 or later, which includes proper directory protection mechanisms and index.html file placement. System administrators should also implement proper web server configuration settings to prevent directory browsing, ensuring that all directories contain appropriate index files or are configured to deny directory listing. Additionally, implementing proper access controls and authentication measures within the Joomla ecosystem.