CVE-2008-2219 in C-News
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in install.php in C-News.fr C-News 1.0.1 allows remote attackers to inject arbitrary web script or HTML via the etape parameter.
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Analysis
by VulDB Data Team • 04/11/2025
The CVE-2008-2219 vulnerability represents a classic cross-site scripting flaw in the C-News.fr content management system version 1.0.1 during its installation process. This vulnerability specifically affects the install.php file where the etape parameter is improperly handled, creating an opening for malicious actors to execute arbitrary web scripts or HTML code within the context of affected user sessions. The issue stems from inadequate input validation and sanitization mechanisms that fail to properly filter or escape user-supplied data before incorporating it into the web application's response. This type of vulnerability falls under CWE-79 which categorizes improper neutralization of input during web page generation as a critical weakness in web application security. The vulnerability exists within the installation phase of the application, making it particularly dangerous as attackers can exploit it during the initial setup process when administrative privileges are being configured, potentially allowing for complete system compromise through the execution of malicious code in the browser of any user who accesses the vulnerable installation page.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing specially formatted input in the etape parameter of the install.php script. When the vulnerable application processes this parameter without proper sanitization, it incorporates the malicious content directly into the HTML response sent to the browser. This creates a persistent XSS vector that can be triggered whenever a user navigates to the affected installation page, allowing attackers to execute scripts in the victim's browser context. The attack requires no special privileges or authentication, making it particularly dangerous for web applications that are publicly accessible during their installation phase. According to ATT&CK framework category T1190, this vulnerability enables initial access through web application attacks, specifically targeting the web application layer to establish a foothold for further exploitation. The vulnerability's impact is amplified because it occurs during installation, when administrators may be less vigilant about security considerations and more focused on completing the setup process.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the ability to steal session cookies, redirect users to malicious websites, modify page content, or perform actions on behalf of authenticated users. In the context of a content management system installation, this could allow attackers to gain administrative control over the entire application or steal sensitive information during the configuration phase. The vulnerability affects the availability and integrity of the web application, as malicious code execution can lead to data corruption, unauthorized access, or complete system compromise. Organizations running C-News.fr version 1.0.1 are particularly vulnerable because the flaw exists in the installation script, which is typically accessible to anyone with web server access. This vulnerability aligns with ATT&CK technique T1059 which covers the use of scripts for execution, and T1566 which covers the use of spearphishing to gain initial access. The risk is compounded by the fact that many organizations may not immediately patch or update their systems, especially older versions of software that are no longer actively supported. The vulnerability demonstrates a fundamental flaw in input handling practices and highlights the critical importance of implementing proper security measures during all phases of software development, including installation and configuration processes.
Mitigation strategies for this vulnerability require immediate patching of the C-News.fr application to version 1.0.2 or later, which should include proper input validation and sanitization of the etape parameter. Organizations should implement proper parameter validation that rejects or escapes special characters in user input, particularly during installation phases when the application is most vulnerable. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting the sources from which scripts can be executed. Input sanitization techniques such as HTML entity encoding should be applied to all user-supplied data before it is rendered in web pages. Security teams should also conduct regular vulnerability assessments and penetration testing to identify similar flaws in other applications and systems. The principle of least privilege should be applied during installation phases, limiting access to installation scripts to authorized personnel only. Additionally, organizations should monitor their web applications for suspicious activity and implement proper logging mechanisms to detect exploitation attempts. This vulnerability underscores the importance of security by design principles and the need for comprehensive security testing throughout the software development lifecycle, particularly focusing on input validation and sanitization techniques that align with industry standards such as OWASP Top Ten and NIST cybersecurity frameworks.