CVE-2008-5936 in mini-pub
Summary
by MITRE
front-end/edit.php in mini-pub 0.3 and earlier allows remote attackers to read files and obtain PHP source code via a filename in the sFileName parameter.
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Analysis
by VulDB Data Team • 11/07/2024
The vulnerability identified as CVE-2008-5936 resides within the mini-pub 0.3 content management system and represents a classic path traversal flaw that enables remote attackers to access arbitrary files on the server. This issue specifically affects the front-end editing component where the sFileName parameter is processed without adequate input validation or sanitization. The vulnerability allows malicious actors to manipulate the filename parameter to traverse the file system and retrieve sensitive information including PHP source code, configuration files, and potentially database credentials stored on the web server. The flaw stems from improper handling of user-supplied input in the file reading functionality, creating an opportunity for unauthorized data disclosure that directly violates fundamental security principles of input validation and access control.
This vulnerability maps directly to CWE-22 known as "Improper Limitation of a Pathname to a Restricted Directory" and aligns with ATT&CK technique T1213.1001 for Data from Information Repositories. The attack vector leverages the lack of proper file path validation where the application directly uses the sFileName parameter to construct file paths without verifying that the requested file resides within the intended directory structure. This creates an arbitrary file reading condition that can be exploited to access not only PHP source code but also other sensitive files such as .htaccess files, database configuration files, and potentially user data. The vulnerability is particularly dangerous because it allows attackers to extract the complete source code of the application, which can reveal implementation details, hardcoded credentials, and other sensitive information that could be used for further exploitation.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more sophisticated attacks including privilege escalation and system compromise. When attackers can obtain PHP source code, they gain insight into the application's architecture and can identify additional vulnerabilities that may not be immediately apparent. The ability to read arbitrary files provides attackers with potential access to database connection strings, cryptographic keys, and other sensitive configuration data that could be leveraged to gain deeper access to the system. This vulnerability essentially undermines the security boundary of the web application, allowing remote attackers to bypass normal access controls and directly access server resources that should remain protected. The implications are particularly severe in environments where the application shares the same server as other sensitive systems, as the extracted information could facilitate lateral movement attacks.
Mitigation strategies for CVE-2008-5936 must address both the immediate vulnerability and broader security posture of the affected system. The primary remediation involves implementing proper input validation and sanitization of the sFileName parameter to prevent path traversal attempts. This includes restricting file access to specific directories, implementing whitelisting of allowed files, and using secure file access functions that prevent directory traversal sequences such as ../ or ..\. Additionally, the application should be updated to a newer version of mini-pub that addresses this vulnerability, as version 0.3 is outdated and likely contains additional unpatched security issues. Network segmentation and access controls should be implemented to limit the potential impact of such vulnerabilities, while regular security audits and source code reviews should be conducted to identify similar path traversal issues in other components. The remediation process should also include implementing proper logging and monitoring to detect suspicious file access patterns that may indicate exploitation attempts.