CVE-2008-3036 in CMS little
Summary
by MITRE
Directory traversal vulnerability in index.php in CMS little 0.0.1 allows remote attackers to include and execute arbitrary local files, and probably remote files, via a .. (dot dot) in the template parameter.
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Analysis
by VulDB Data Team • 10/31/2024
The vulnerability described in CVE-2008-3036 represents a critical directory traversal flaw within the CMS little version 0.0.1, specifically affecting the index.php script. This vulnerability falls under the category of improper input validation and represents a classic path traversal attack vector that has been consistently documented across numerous security frameworks and standards. The issue stems from the application's failure to properly sanitize user-supplied input parameters, particularly the template parameter, which is directly incorporated into file inclusion operations without adequate validation or sanitization measures.
The technical implementation of this vulnerability allows remote attackers to manipulate the template parameter by injecting directory traversal sequences using the .. (dot dot) notation. When the application processes this input, it constructs file paths that reference directories outside the intended scope, potentially enabling access to arbitrary local files on the server filesystem. This flaw operates at the core of the application's file inclusion mechanism, where user input directly influences the file resolution process, creating a pathway for unauthorized file access and execution. The vulnerability's impact extends beyond local file access to potentially include remote file execution capabilities, significantly amplifying the threat surface and attack vectors available to malicious actors.
From an operational perspective, this vulnerability presents a severe risk to the confidentiality, integrity, and availability of the affected system. Attackers can leverage this weakness to read sensitive configuration files, database credentials, application source code, and other privileged information stored on the server. The potential for remote code execution through arbitrary file inclusion creates a pathway for full system compromise, allowing attackers to establish persistent access, deploy malware, or conduct further reconnaissance activities within the network environment. The vulnerability's remote exploitability means that attackers do not require physical access to the system or local network presence to initiate attacks, making it particularly dangerous in publicly accessible web applications.
Security mitigations for this vulnerability should focus on implementing robust input validation and sanitization mechanisms at all entry points where user-supplied data influences file operations. The recommended approach involves implementing strict parameter validation that rejects or filters out directory traversal sequences and other malicious input patterns. Organizations should adopt the principle of least privilege when configuring file access permissions and implement proper input sanitization techniques that prevent the exploitation of path traversal vulnerabilities. The vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, and maps to ATT&CK technique T1059.007 for remote code execution through web application vulnerabilities. Additionally, implementing web application firewalls, input encoding, and proper error handling can significantly reduce the attack surface and prevent exploitation of similar vulnerabilities in the future.
The broader implications of this vulnerability demonstrate the critical importance of secure coding practices and input validation in web applications. This flaw exemplifies how seemingly simple input parameters can create significant security risks when proper validation mechanisms are not implemented. Organizations should conduct regular security assessments and code reviews to identify and remediate similar vulnerabilities in their web applications, ensuring that file inclusion operations are properly secured against malicious input manipulation. The vulnerability serves as a reminder of the necessity for comprehensive security testing, including penetration testing and vulnerability scanning, to identify and address directory traversal issues before they can be exploited by malicious actors in the wild.