CVE-2008-6590 in LightNEasy
Summary
by MITRE
Multiple directory traversal vulnerabilities in LightNEasy "no database" (aka flat) version 1.2.2, and possibly SQLite version 1.2.2, allow remote attackers to read arbitrary files via a .. (dot dot) in the page parameter to (1) index.php and (2) LightNEasy.php.
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Analysis
by VulDB Data Team • 08/03/2025
The vulnerability identified as CVE-2008-6590 represents a critical directory traversal flaw affecting LightNEasy content management systems in their flat file and SQLite database configurations. This issue specifically impacts version 1.2.2 of the software, where remote attackers can exploit the weakness to access arbitrary files on the server through manipulation of the page parameter. The vulnerability manifests in two primary entry points within the application's codebase, namely index.php and LightNEasy.php, which both fail to properly validate user input containing directory traversal sequences.
The technical exploitation of this vulnerability relies on the absence of proper input sanitization and validation mechanisms within the LightNEasy application framework. When the page parameter contains sequences such as .. (dot dot) characters, the application fails to sanitize or restrict these inputs, allowing attackers to navigate beyond the intended directory structure and access files that should remain protected. This flaw directly maps to CWE-22, which defines improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability demonstrates a classic lack of input validation that enables attackers to manipulate file system access controls through crafted URL parameters.
The operational impact of this vulnerability extends far beyond simple information disclosure, as successful exploitation can provide attackers with access to sensitive system files, configuration data, and potentially user credentials stored within the application's file structure. Remote attackers can leverage this weakness to read system files that may contain database connection strings, application secrets, or other sensitive information that could facilitate further attacks. The implications are particularly severe given that the vulnerability affects the "no database" version of LightNEasy, which typically stores all content in flat files, making the entire content structure potentially accessible to unauthorized parties. This vulnerability also aligns with ATT&CK technique T1083, which describes the discovery of system information through directory traversal and file enumeration techniques.
Mitigation strategies for CVE-2008-6590 should prioritize immediate patching of affected LightNEasy installations to version 1.2.3 or later, which contains the necessary input validation fixes. Organizations should implement proper input sanitization measures that filter or reject directory traversal sequences before processing user-supplied parameters. Additionally, the principle of least privilege should be enforced by ensuring that web server processes operate with minimal required permissions and that sensitive files are properly secured with appropriate access controls. Network-level protections such as web application firewalls can provide additional defense in depth, though the most effective solution remains the application-level patching that addresses the root cause of the vulnerability. The remediation process should also include comprehensive security testing to identify any other potential directory traversal vulnerabilities within the application's codebase, as this type of flaw often indicates broader input validation weaknesses that require systematic addressing.