CVE-2012-3996 in TikiWiki
Summary
by MITRE
TikiWiki CMS/Groupware 8.3 and earlier allows remote attackers to obtain the installation path via a direct request to (1) admin/include_calendar.php, (2) tiki-rss_error.php, or (3) tiki-watershed_service.php.
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Analysis
by VulDB Data Team • 05/04/2025
The vulnerability identified as CVE-2012-3996 represents a critical information disclosure flaw within TikiWiki CMS/Groupware versions 8.3 and earlier. This security weakness allows remote attackers to extract sensitive installation path information through direct requests to specific script files within the application's directory structure. The vulnerability stems from insufficient input validation and improper error handling mechanisms that fail to sanitize or restrict access to internal system paths during script execution. When attackers make direct requests to the vulnerable endpoints including admin/include_calendar.php, tiki-rss_error.php, or tiki-watershed_service.php, the application inadvertently reveals its physical installation path to unauthorized users. This type of information disclosure can provide attackers with crucial reconnaissance data that significantly reduces the difficulty of subsequent exploitation attempts.
The technical nature of this vulnerability aligns with CWE-200, which categorizes information exposure vulnerabilities, and specifically relates to improper error handling that reveals system information to unauthorized parties. The flaw operates by bypassing normal application access controls and error management procedures, allowing direct access to internal file paths that should remain hidden from external users. Attackers can leverage this information to understand the application's directory structure, potentially identifying other sensitive files or components that may be accessible through the same vulnerability. The attack vector is particularly concerning because it requires minimal privileges and can be executed remotely without authentication, making it an attractive target for automated scanning tools and malicious actors seeking to map application infrastructure.
The operational impact of this vulnerability extends beyond simple path disclosure, as it provides attackers with foundational information necessary for more sophisticated attacks. Once the installation path is known, threat actors can use this information to plan targeted attacks against other components of the system, potentially leading to privilege escalation or further information disclosure. The vulnerability affects the confidentiality aspect of the CIA triad by exposing internal system information that should remain private to authorized users. Additionally, this flaw can contribute to broader security compromise scenarios as it provides attackers with knowledge of the application's architecture and file organization. The vulnerability's persistence across multiple script files indicates a systemic issue in the application's error handling and input validation mechanisms rather than an isolated incident.
Organizations utilizing affected TikiWiki versions should prioritize immediate remediation through official security patches provided by the vendor, as this vulnerability represents a significant risk to system confidentiality and overall security posture. System administrators should implement network-level restrictions to limit access to the vulnerable endpoints and consider deploying web application firewalls to detect and block suspicious direct requests. The vulnerability also highlights the importance of proper error handling configuration and input validation practices within web applications, aligning with ATT&CK technique T1211 for exfiltration of system information. Security teams should conduct comprehensive vulnerability assessments to identify similar information disclosure weaknesses within their application portfolio and implement robust logging mechanisms to detect unauthorized access attempts to sensitive system information. Regular security updates and patch management processes become critical in preventing exploitation of such vulnerabilities that can provide attackers with essential reconnaissance data for more advanced attack vectors.