CVE-2009-3260 in LiveStreet
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in LiveStreet 0.2 allows remote attackers to inject arbitrary web script or HTML via the header of the topic in a comment.
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Analysis
by VulDB Data Team • 06/30/2025
The CVE-2009-3260 vulnerability represents a classic cross-site scripting flaw discovered in LiveStreet version 0.2, a content management system designed for creating and managing web forums and community platforms. This vulnerability resides in the comment handling mechanism where user-provided input is not adequately sanitized before being rendered back to other users. The specific weakness occurs when processing the header field of topics within comments, creating an opening for malicious actors to execute arbitrary web scripts or HTML code in the contexts of other users who view the affected content. This type of vulnerability falls under the category of stored XSS attacks since the malicious payload is persisted in the application's database and executed whenever affected users access the compromised content.
The technical exploitation of this vulnerability involves an attacker crafting a malicious comment containing specially crafted HTML or JavaScript code within the topic header field. When other users browse the forum or view the comment section, their browsers execute the injected script in the context of their authenticated session with the vulnerable application. This creates a dangerous scenario where attackers can steal session cookies, perform actions on behalf of users, redirect them to malicious sites, or deface the forum content. The vulnerability demonstrates a critical failure in input validation and output encoding practices, as the application fails to properly escape or filter user-supplied data before displaying it to other users. This weakness directly maps to CWE-79 which defines the common weakness of cross-site scripting vulnerabilities, specifically categorized as a failure to sanitize user input before rendering it in web pages.
The operational impact of this vulnerability extends beyond simple data corruption or display issues, as it fundamentally compromises the security posture of the entire LiveStreet installation. An attacker with successful exploitation can leverage this vulnerability to conduct session hijacking attacks, steal sensitive user information, modify forum content, or even establish persistent backdoors through more sophisticated attack vectors. The affected users may unknowingly execute malicious code that could lead to complete account compromise, especially if they have administrative privileges or access to sensitive information within the forum environment. The vulnerability affects the integrity and availability of the platform, as malicious actors can deface content, inject spam, or redirect users to phishing sites, thereby undermining user trust and potentially causing reputational damage to organizations using the platform.
Mitigation strategies for CVE-2009-3260 require immediate implementation of proper input sanitization and output encoding mechanisms throughout the application's codebase. The primary defense involves implementing strict validation of all user-supplied input, particularly in fields where HTML content is accepted or displayed. Applications should employ context-aware output encoding techniques that properly escape special characters before rendering user content in web pages. This includes implementing Content Security Policy headers to limit script execution and using frameworks or libraries that provide built-in XSS protection mechanisms. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application. The vulnerability highlights the importance of following secure coding practices as outlined in OWASP Top Ten and NIST cybersecurity guidelines, emphasizing the need for comprehensive input validation and proper output encoding to prevent such critical security flaws from persisting in web applications.