CVE-2015-1175 in PrestaShop
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in blocklayered-ajax.php in the blocklayered module in PrestaShop 1.6.0.9 and earlier allows remote attackers to inject arbitrary web script or HTML via the layered_price_slider parameter.
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Analysis
by VulDB Data Team • 11/30/2024
The cross-site scripting vulnerability identified as CVE-2015-1175 resides within the blocklayered module of PrestaShop versions 1.6.0.9 and earlier, representing a critical security flaw that enables remote attackers to execute malicious web scripts or HTML code. This vulnerability specifically targets the blocklayered-ajax.php file, which serves as a crucial component for handling dynamic price slider functionality within the e-commerce platform's layered navigation system. The flaw manifests when the layered_price_slider parameter is improperly processed without adequate input validation or output encoding, creating an exploitable entry point for malicious actors seeking to compromise user sessions or inject harmful content.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied input within the layered_price_slider parameter, which is utilized to filter product prices based on user-defined ranges. When users interact with the price slider interface, the parameter values are passed through the blocklayered-ajax.php script without proper HTML escaping or context-appropriate encoding. This omission allows attackers to inject malicious scripts that execute in the context of other users' browsers, potentially leading to session hijacking, credential theft, or the execution of unauthorized commands. The vulnerability follows the classic XSS attack pattern where untrusted data flows from the web application to the user's browser without appropriate security measures, making it particularly dangerous in e-commerce environments where users trust the platform with sensitive information.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform a variety of malicious activities within the compromised user sessions. Attackers could potentially redirect users to phishing sites, steal session cookies, modify product displays, or even manipulate the shopping cart functionality to redirect purchases to malicious addresses. The vulnerability affects all users interacting with the layered navigation system, particularly those who browse product categories with price filtering capabilities. Given that PrestaShop serves as a widely-used e-commerce platform, the potential for widespread exploitation increases significantly, especially when considering that many online retailers rely on this module for product categorization and filtering features.
Security professionals should note that this vulnerability aligns with CWE-79, which defines Cross-Site Scripting as a weakness where untrusted data is processed and returned to users without proper sanitization. The attack vector follows ATT&CK technique T1566.001, specifically targeting the execution of malicious code through web-based input validation bypasses. Organizations should prioritize immediate patching of affected PrestaShop installations, as the vulnerability remains exploitable in older versions. The recommended mitigation strategy involves implementing proper input validation and output encoding mechanisms, ensuring that all user-supplied parameters are properly sanitized before being processed or returned to users. Additionally, organizations should consider implementing Content Security Policy headers to add an additional layer of protection against script injection attacks, while monitoring for suspicious activity in the layered navigation functionality to detect potential exploitation attempts.