CVE-2007-3198 in PHP Blog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in comments.php in Maran PHP Blog (Maran Blog), possibly only versions before 20070610, allows remote attackers to inject arbitrary web script or HTML via the id parameter.
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Analysis
by VulDB Data Team • 10/13/2025
The CVE-2007-3198 vulnerability represents a classic cross-site scripting flaw in the Maran PHP Blog software, specifically within the comments.php script. This vulnerability resides in the handling of the id parameter, which fails to properly sanitize user input before rendering it in the web page context. The issue affects versions of the software prior to 20070610, indicating this was a relatively early vulnerability in the software lifecycle. The vulnerability classification aligns with CWE-79 which describes improper neutralization of input during web page generation, making it a standard web application security concern. This type of flaw enables attackers to execute malicious scripts in the context of other users' browsers, potentially leading to session hijacking, data theft, or further exploitation of the affected system.
The technical implementation of this vulnerability occurs when user-provided data is directly incorporated into dynamic web content without appropriate sanitization or encoding. In the case of Maran Blog, when the id parameter is passed to comments.php, the application does not validate or escape the input before displaying it in the HTML output. This creates an opportunity for attackers to inject malicious JavaScript code or HTML content that will execute in the browser of any user who views the affected page. The vulnerability is particularly concerning because it allows remote code execution within the context of the victim's browser session, potentially enabling attackers to access cookies, session tokens, or other sensitive information. The attack vector requires no special privileges and can be executed through simple web requests, making it highly exploitable in real-world scenarios.
The operational impact of CVE-2007-3198 extends beyond simple script injection, as it can serve as a stepping stone for more sophisticated attacks within the target environment. When exploited, this vulnerability can enable attackers to perform session hijacking by stealing session cookies, which could lead to unauthorized access to administrative functions or user accounts. The vulnerability also aligns with ATT&CK technique T1566 which covers social engineering through malicious web content, and T1059 which involves execution through scripting. Organizations using affected versions of Maran Blog face potential data breaches, unauthorized content modification, and possible establishment of backdoors through persistent script injection. The vulnerability's impact is particularly severe in environments where the blog serves as a public-facing interface for user interactions, as it can be exploited to compromise multiple users simultaneously.
Mitigation strategies for CVE-2007-3198 should focus on immediate input validation and output encoding practices. The most effective remediation involves implementing proper parameter sanitization before any user input is processed or displayed in web pages. This includes applying HTML entity encoding to all dynamic content and implementing strict input validation that rejects or filters out potentially malicious characters. Organizations should also consider implementing Content Security Policy (CSP) headers to limit script execution and prevent unauthorized code injection. The vulnerability demonstrates the critical importance of input validation and output encoding as fundamental security controls, principles that align with OWASP Top Ten categories and defense-in-depth strategies. Regular security updates and patch management are essential to prevent exploitation of known vulnerabilities, as this particular issue was likely addressed in subsequent releases of the Maran Blog software. Additionally, implementing web application firewalls and security monitoring systems can help detect and prevent exploitation attempts, while comprehensive security awareness training for developers can reduce the likelihood of similar vulnerabilities in future applications.