CVE-2018-15896 in Website Seller Script
Summary
by MITRE
PHP Scripts Mall Website Seller Script 2.0.5 has XSS via Personal Address or Company Name.
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Analysis
by VulDB Data Team • 03/19/2020
The vulnerability identified as CVE-2018-15896 affects the PHP Scripts Mall Website Seller Script version 2.0.5, representing a cross-site scripting flaw that allows attackers to inject malicious scripts into web applications. This particular vulnerability manifests through user input fields designated for Personal Address or Company Name, demonstrating a classic input validation weakness that enables unauthorized code execution within the context of victim browsers. The flaw resides in the application's failure to properly sanitize or escape user-supplied data before rendering it on web pages, creating an environment where malicious actors can exploit the system to execute arbitrary JavaScript code.
The technical implementation of this vulnerability stems from inadequate input sanitization mechanisms within the seller script's data processing pipeline. When users enter information into the Personal Address or Company Name fields, the application does not sufficiently validate or escape these inputs before storing or displaying them. This creates a persistent cross-site scripting vector where attackers can craft malicious payloads that execute in the browser context of other users who view the affected content. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or even execute full browser-based attacks. An attacker could exploit this vulnerability to establish persistent access to user accounts, harvest sensitive information from authenticated sessions, or manipulate the application's functionality to gain unauthorized access to seller data. The vulnerability affects all users who interact with the seller script's user profile or listing management features, potentially compromising the entire user base of the affected website.
Mitigation strategies for this vulnerability should include immediate implementation of proper input validation and output encoding mechanisms. The application must sanitize all user inputs through proper escaping techniques before rendering them on web pages, particularly in HTML contexts where JavaScript execution could occur. Security patches should enforce strict validation of address and company name fields to prevent the injection of HTML or JavaScript characters. Additionally, implementing content security policies and using frameworks that automatically escape output can provide defense-in-depth measures. Organizations should also conduct thorough security testing of all user input fields and maintain up-to-date vulnerability management processes to prevent similar issues in future deployments. The fix should align with secure coding practices outlined in OWASP Top Ten and ensure that all user-supplied data undergoes proper sanitization before being processed or displayed within the application interface.