CVE-2005-3528 in TikiWiki
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in tiki-view_forum_thread.php in TikiWiki 1.9.0 through 1.9.2 allows remote attackers to inject arbitrary web script or HTML via the topics_offset parameter.
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Analysis
by VulDB Data Team • 07/13/2018
This cross-site scripting vulnerability exists in TikiWiki versions 1.9.0 through 1.9.2 within the tiki-view_forum_thread.php script where the topics_offset parameter is not properly sanitized before being rendered in the web response. The flaw represents a classic reflected XSS vulnerability that allows remote attackers to inject malicious scripts into web pages viewed by other users. The vulnerability stems from insufficient input validation and output encoding practices, where user-supplied data flows directly into HTML context without proper sanitization mechanisms. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications. The attack vector involves an attacker crafting a malicious URL containing script code within the topics_offset parameter and deceiving users into clicking the link, thereby executing the injected code in the victim's browser context. The operational impact is significant as successful exploitation can lead to session hijacking, credential theft, defacement of web content, or redirection to malicious sites. Attackers could leverage this vulnerability to establish persistent access to user sessions, particularly if the affected forum is used by administrators or privileged users. The vulnerability aligns with ATT&CK technique T1531 which involves using vulnerabilities to gain access to user sessions and maintain persistent access. Organizations using affected TikiWiki versions face risk of unauthorized access and data compromise, especially in environments where users may be tricked into clicking malicious links. The root cause lies in the application's failure to implement proper input validation and output encoding controls, specifically failing to escape special characters in user-provided parameters before rendering them in HTML contexts.
The technical exploitation of this vulnerability requires minimal sophistication and can be automated using common web exploitation frameworks. Attackers typically construct malicious URLs with encoded script payloads such as javascript:alert(document.cookie) or more sophisticated payload combinations that can harvest session cookies or redirect users to malicious domains. The vulnerability affects the forum thread viewing functionality where users browse through discussion threads, making it particularly dangerous in community-driven platforms where users frequently interact with forum content. The impact extends beyond simple script execution as it can be combined with other techniques to perform more complex attacks including CSRF exploitation or privilege escalation within the application context. Security practitioners should note that this vulnerability demonstrates poor secure coding practices and highlights the importance of implementing defense-in-depth strategies including Content Security Policy headers, proper input validation, and output encoding. The vulnerability also represents a failure in the application's security testing process, as reflected XSS flaws typically should be identified during routine security assessments and penetration testing phases. Organizations should consider implementing web application firewalls as a temporary mitigation while planning for proper patching and code review processes to prevent similar issues in the future.
The remediation approach for this vulnerability involves immediate patching of the affected TikiWiki versions to the latest stable releases that contain the necessary input validation and output encoding fixes. Developers should implement proper parameter sanitization by validating the topics_offset parameter against expected formats and applying appropriate HTML escaping before rendering user input in web responses. This fix should be implemented following secure coding guidelines such as those outlined in the OWASP Secure Coding Practices and the CERT Secure Coding Standards. The patch should include input validation that restricts the topics_offset parameter to numeric values only and applies proper encoding to prevent script execution in HTML contexts. Organizations should also consider implementing additional security controls including regular security audits, automated vulnerability scanning, and comprehensive code review processes to identify and remediate similar issues. The vulnerability serves as a reminder of the critical importance of input validation and output encoding in web application security, particularly in applications handling user-generated content. Regular security training for development teams and implementation of security-aware development practices can help prevent such vulnerabilities from being introduced in the first place, reducing the attack surface and improving overall application security posture.