CVE-2007-0331 in Liens Dynamiques
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in liens.php3 in liens_dynamiques 2.1 allows remote attackers to inject arbitrary web script or HTML by using the ajouter=1 query string and the add menu.
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Analysis
by VulDB Data Team • 10/04/2017
The vulnerability described in CVE-2007-0331 represents a classic cross-site scripting flaw within the liens_dynamiques 2.1 web application, specifically affecting the liens.php3 script. This type of vulnerability falls under the CWE-79 category, which defines cross-site scripting as a code injection attack that occurs when an application includes untrusted data in a web page without proper validation or encoding. The vulnerability manifests when attackers manipulate the ajouter=1 query string parameter combined with the add menu functionality to inject malicious scripts or HTML content into the web application's output.
The technical exploitation of this vulnerability relies on the application's failure to sanitize user input from the query string parameters. When the liens.php3 script processes the ajouter=1 parameter, it does not adequately validate or escape the input data before rendering it in the web page context. This allows attackers to inject malicious JavaScript code or HTML elements that will execute in the context of other users' browsers who visit the affected page. The vulnerability is particularly dangerous because it enables attackers to perform actions on behalf of authenticated users, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
From an operational perspective, this XSS vulnerability creates significant security risks for organizations using the affected liens_dynamiques 2.1 application. The impact extends beyond simple script injection, as attackers can leverage this flaw to establish persistent access to user sessions, steal sensitive information, or manipulate the application's behavior. The vulnerability affects the integrity and confidentiality of web applications by allowing unauthorized code execution in users' browsers. According to ATT&CK framework, this represents a technique categorized under T1566.001 - Phishing: Spearphishing Attachment, where attackers can use the XSS vulnerability to deliver malicious payloads through crafted web content that appears legitimate to users.
The mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms. Organizations should ensure that all user-supplied data is validated against a strict whitelist of acceptable characters and patterns before being processed or displayed. The application should implement proper HTML escaping or encoding when rendering user input to prevent the execution of malicious scripts. Additionally, implementing Content Security Policy (CSP) headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded and executed. The fix should also include proper parameter validation for the ajouter=1 query string and other similar parameters to prevent unauthorized access to the add menu functionality. This vulnerability highlights the critical importance of input sanitization and output encoding practices in web application security, as recommended by OWASP Top Ten and other industry security standards.