CVE-2008-0501 in phpMyClub
Summary
by MITRE
Directory traversal vulnerability in phpMyClub 0.0.1 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the page_courante parameter to the top-level URI.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 10/15/2024
The vulnerability described in CVE-2008-0501 represents a classic directory traversal flaw that affects the phpMyClub content management system version 0.0.1. This security weakness enables remote attackers to manipulate file inclusion mechanisms by exploiting improper input validation in the application's parameter handling. The vulnerability specifically manifests when the application fails to properly sanitize the page_courante parameter, allowing malicious actors to craft requests that traverse directory structures and access unauthorized files on the server. The issue stems from the application's lack of proper path validation and sanitization, creating an opening for attackers to execute arbitrary code through carefully constructed file paths that include directory traversal sequences.
This directory traversal vulnerability falls under the CWE-22 category, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. The flaw allows attackers to manipulate the page_courante parameter in the top-level URI to include sequences such as .. (dot dot) that navigate upward through the directory structure. When the application processes these parameters without adequate validation, it can inadvertently load and execute local files that should remain protected from external access. The vulnerability is particularly dangerous because it can potentially allow attackers to access sensitive system files, configuration data, or even execute malicious code on the target server. This type of vulnerability represents a fundamental flaw in input validation and access control mechanisms within web applications.
The operational impact of CVE-2008-0501 extends beyond simple unauthorized file access, as it can lead to complete system compromise when exploited effectively. Attackers can leverage this vulnerability to access database configuration files, application source code, user credentials, and other sensitive information stored on the server. The ability to include and execute arbitrary local files provides attackers with multiple attack vectors including remote code execution, data exfiltration, and system persistence mechanisms. From an attacker's perspective, this vulnerability aligns with the MITRE ATT&CK framework's technique T1059.007 for command and scripting interpreter, as it enables code execution through file inclusion. The vulnerability also maps to T1566.001 for malicious file execution and T1078.004 for valid accounts, as attackers can potentially gain access to system resources and user credentials through the exploited path traversal mechanism.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and sanitization measures throughout the application's codebase. The primary defense involves proper parameter validation that rejects or sanitizes directory traversal sequences before they can be processed by the application. Implementing a whitelist approach for acceptable parameters and ensuring that all user-supplied input is properly escaped or encoded can effectively prevent exploitation attempts. Additionally, restricting file inclusion mechanisms to predefined directories and implementing proper access controls can significantly reduce the attack surface. Organizations should also consider implementing web application firewalls that can detect and block suspicious path traversal patterns, as well as conducting regular security audits to identify and remediate similar vulnerabilities in other components of their web infrastructure. The vulnerability demonstrates the critical importance of proper input validation and access control mechanisms in preventing privilege escalation and unauthorized system access.