CVE-2024-32722 in Coupon & Discount Code Reveal Button Plugin
Summary
by MITRE • 04/24/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Coupon & Discount Code Reveal Button allows Stored XSS.This issue affects Coupon & Discount Code Reveal Button: from n/a through 1.2.5.
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Analysis
by VulDB Data Team • 04/04/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The issue specifically resides in the Coupon & Discount Code Reveal Button plugin where user input containing script code is not properly sanitized during the web page generation process. The vulnerability allows for stored cross-site scripting attacks, meaning malicious payloads persist in the application's database and execute whenever affected pages are rendered to users. This type of vulnerability falls under CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a classic stored XSS vector that can compromise user sessions and data. The affected version range indicates that all versions from the initial release through 1.2.5 are vulnerable, suggesting this flaw has existed for some time within the plugin's codebase.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the plugin's functionality, which then gets stored in the database without proper sanitization. When other users visit pages that display this stored content, their browsers execute the injected scripts within the context of the vulnerable website. This creates a persistent threat where attackers can manipulate the plugin's output to perform actions such as stealing cookies, redirecting users to malicious sites, or executing arbitrary commands on behalf of the victims. The stored nature of this XSS means that the attack does not require the user to interact directly with the malicious input, as the script executes automatically whenever the affected page loads. This vulnerability directly maps to attack techniques described in the ATT&CK framework under T1531 for "Account Access Removal" and T1059.007 for "Command and Scripting Interpreter: JavaScript", as attackers can leverage the XSS to execute JavaScript code and potentially escalate privileges within the application context.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable comprehensive session hijacking and data exfiltration. An attacker who successfully exploits this vulnerability could gain access to user accounts, steal sensitive information, modify content, or even use the compromised site as a launchpad for further attacks against the broader network. The vulnerability affects any user who interacts with the plugin's functionality, particularly those who view discount codes or coupon information that may contain malicious payloads. Given the nature of the plugin's purpose, which involves revealing discount codes, attackers could craft malicious discount codes that contain scripts designed to capture user credentials or redirect them to phishing sites. The lack of proper input validation and output encoding in the web page generation process creates an exploitable condition that violates fundamental security principles of input sanitization and output encoding as recommended by OWASP and other security frameworks.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms throughout the plugin's codebase. The most effective immediate solution involves sanitizing all user-provided input before storing it in the database and properly encoding all output before rendering it in web pages. This includes implementing proper HTML escaping, using Content Security Policy headers, and ensuring that all dynamic content is properly validated against a strict whitelist of acceptable characters and formats. Security patches should be applied immediately to update the plugin to a version that addresses the XSS vulnerability, while administrators should also implement monitoring for suspicious input patterns and conduct regular security audits of the plugin's functionality. Additionally, implementing proper access controls and session management can help limit the potential damage if an attacker does manage to exploit the vulnerability. Organizations should also consider implementing web application firewalls and security scanning tools to detect and prevent exploitation attempts, while user education about the risks of clicking on suspicious discount codes or links remains a crucial defensive measure. The vulnerability demonstrates the importance of following secure coding practices and the critical need for regular security assessments of third-party plugins and applications.