CVE-2008-6589 in LightNEasy
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in LightNEasy "no database" (aka flat) version 1.2.2, and possibly SQLite version 1.2.2, allow remote attackers to inject arbitrary web script or HTML via the page parameter to (1) index.php and (2) LightNEasy.php.
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Analysis
by VulDB Data Team • 11/04/2018
The vulnerability identified as CVE-2008-6589 represents a critical cross-site scripting flaw affecting the LightNEasy content management system in its flat file version 1.2.2 and potentially the SQLite version as well. This vulnerability resides in the application's handling of user-supplied input through the page parameter, which is processed by two primary script files: index.php and LightNEasy.php. The flaw allows remote attackers to inject malicious web scripts or HTML content directly into the application's response, creating a persistent security risk that can affect all users interacting with the vulnerable system.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the LightNEasy application's core processing logic. When the page parameter is passed to either index.php or LightNEasy.php, the application fails to properly escape or filter the input before incorporating it into the HTTP response sent to users. This allows attackers to craft malicious payloads that, when executed in a victim's browser, can perform unauthorized actions such as stealing session cookies, redirecting users to malicious sites, or executing arbitrary commands within the context of the vulnerable application. The vulnerability maps directly to CWE-79, which specifically addresses Cross-Site Scripting flaws in web applications.
The operational impact of this vulnerability extends beyond simple script injection, as it creates a vector for more sophisticated attacks within the web application environment. An attacker could leverage this vulnerability to establish persistent access through session hijacking, deface the website with malicious content, or use the compromised system as a launching point for further attacks against the internal network. The flat file architecture of LightNEasy, which stores all data in text files rather than a database, makes this vulnerability particularly concerning as it affects the core application logic that processes user requests without proper sanitization. This vulnerability aligns with ATT&CK technique T1566, which covers spearphishing attachments and links, as attackers could exploit this flaw to deliver malicious payloads through crafted web requests.
Mitigation strategies for CVE-2008-6589 should focus on immediate input validation and output encoding measures. The most effective approach involves implementing proper HTML escaping of all user-supplied input before it is rendered in web pages, ensuring that any potentially malicious script tags or JavaScript code are neutralized before execution. Additionally, developers should implement Content Security Policy headers to limit the sources from which scripts can be loaded and executed within the application context. The vulnerability highlights the importance of following secure coding practices as outlined in OWASP Top 10 and the principle of least privilege in web application development. Organizations should also consider implementing web application firewalls to detect and block suspicious requests containing XSS patterns, though this represents a secondary defense mechanism rather than a primary fix. Regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in future versions of the application.