CVE-2007-0763 in F3Site
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the news comment functionality in F3Site 2.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the Autor field.
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Analysis
by VulDB Data Team • 08/21/2024
The CVE-2007-0763 vulnerability represents a classic cross-site scripting flaw that emerged in F3Site version 2.1 and earlier systems. This vulnerability specifically targets the news comment functionality within the content management platform, creating a security risk that allows malicious actors to execute arbitrary web scripts or HTML code. The flaw manifests through the Autor field, which serves as an entry point for user-generated content that should normally be sanitized before being displayed on web pages. The vulnerability stems from inadequate input validation and output encoding mechanisms within the application's comment processing pipeline, enabling attackers to bypass security controls that should prevent malicious code execution.
This XSS vulnerability operates under the Common Weakness Enumeration CWE-79 classification, which specifically addresses improper neutralization of input during web page generation. The flaw falls into the category of reflected cross-site scripting where malicious payloads are injected through user input fields and then executed when other users view the affected content. The Autor field serves as the primary attack vector, as it likely accepts user-provided data without proper sanitization or encoding before rendering in HTML contexts. Attackers can exploit this weakness by submitting malicious scripts in the Autor field, which then get executed in the browsers of other users who view the affected news comments, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple data corruption or display issues. When exploited, the XSS flaw can compromise user sessions and enable attackers to perform unauthorized actions on behalf of victims. The vulnerability creates a persistent threat vector that can be leveraged for various malicious activities including cookie theft, phishing attacks, and malware distribution. Users who view affected news comments may unknowingly execute malicious scripts that can harvest sensitive information, modify website content, or redirect users to compromised sites. The long-term consequences include potential data breaches, reputation damage to the organization running the F3Site platform, and possible regulatory compliance violations.
Mitigation strategies for CVE-2007-0763 should focus on implementing robust input validation and output encoding mechanisms. The primary defense involves sanitizing all user inputs, particularly those fields that are rendered in HTML contexts such as the Autor field. Implementing proper HTML encoding techniques ensures that special characters are properly escaped before being displayed on web pages. Organizations should also consider implementing Content Security Policy headers to limit the execution of inline scripts and restrict the sources from which scripts can be loaded. Additionally, the recommended approach includes upgrading to F3Site versions that address this vulnerability, as the flaw was likely resolved in subsequent releases. Security teams should also implement regular security testing including dynamic application security testing and manual code reviews to identify similar vulnerabilities in other application components. The mitigation efforts should align with industry best practices outlined in the OWASP Top Ten and the ATT&CK framework's web application exploitation techniques, particularly focusing on the execution of malicious code through web interfaces.