CVE-2024-34422 in Viet Affiliate Link Plugin
Summary
by MITRE • 05/14/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in trinhtuantai Viet Affiliate Link allows Stored XSS.This issue affects Viet Affiliate Link: from n/a through 1.2.
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Analysis
by VulDB Data Team • 03/31/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability exists within the trinhtuantai Viet Affiliate Link plugin, specifically in its handling of user input during web page generation processes. The stored nature of this vulnerability means that malicious payloads persist in the application's database and are executed whenever affected pages are loaded, creating a persistent threat vector that can compromise multiple users over time. The vulnerability affects all versions of the plugin from the initial release through version 1.2, indicating a long-standing issue that has not been adequately addressed.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output sanitization within the plugin's web page generation routines. When users submit content or parameters through the affiliate link functionality, the application fails to properly neutralize potentially malicious input before storing it in the database or rendering it in subsequent web pages. This allows attackers to embed script tags or other malicious code within affiliate link parameters, which then executes in the context of other users' browsers when they view pages containing the compromised data. The flaw operates at the application layer where user-supplied data is processed and displayed without adequate security controls.
The operational impact of this vulnerability is severe as it provides attackers with the ability to execute arbitrary code in victims' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites. Since the vulnerability is stored, the attack can persist even after the initial injection, allowing threat actors to maintain access to compromised systems over extended periods. The affected plugin's functionality as an affiliate link manager makes it particularly dangerous as it likely handles user-generated content, merchant information, and transactional data that could be exploited for financial gain or data exfiltration. This vulnerability undermines the security of any website using the affected plugin and could result in significant reputational damage and regulatory compliance issues.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the plugin's codebase. The most effective immediate solution involves sanitizing all user-supplied input before storage and applying proper HTML escaping when rendering content in web pages. Security patches should enforce strict content validation rules and implement Content Security Policy headers to prevent unauthorized script execution. Organizations using this plugin should conduct immediate vulnerability assessments to identify any compromised data and consider implementing web application firewalls to detect and block malicious payloads. The remediation process should align with CWE-79 standards for cross-site scripting prevention and follow ATT&CK framework techniques for mitigating web application vulnerabilities, particularly those related to command injection and code execution in web contexts. Regular security audits and input validation testing should be implemented to prevent similar issues in future releases.