CVE-2023-50893 in Impreza Plugin
Summary
by MITRE • 12/29/2023
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in UpSolution Impreza – WordPress Website and WooCommerce Builder allows Reflected XSS.This issue affects Impreza – WordPress Website and WooCommerce Builder: from n/a through 8.17.4.
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Analysis
by VulDB Data Team • 01/21/2024
This cross-site scripting vulnerability exists within the UpSolution Impreza WordPress theme and WooCommerce builder plugin, specifically impacting versions prior to 8.17.4. The flaw represents a classic reflected XSS attack vector that occurs during web page generation when user input is improperly handled and subsequently rendered without adequate sanitization. The vulnerability stems from the theme's failure to properly neutralize malicious input parameters that are reflected back to users through web pages, creating an opportunity for attackers to inject malicious scripts into the browser context of unsuspecting victims.
The technical implementation of this vulnerability involves the theme's web page generation process where unfiltered user input parameters are directly incorporated into HTML output without appropriate encoding or validation. When a malicious user crafts a specially crafted URL containing script payloads and tricks a victim into clicking it, the reflected XSS attack executes in the victim's browser context. This occurs because the theme's input handling mechanism fails to implement proper output encoding or input validation before rendering user-supplied data within web page content. The vulnerability specifically affects the WordPress website and WooCommerce builder functionality, making it particularly dangerous in e-commerce environments where users may be authenticated with elevated privileges.
The operational impact of this reflected XSS vulnerability extends beyond simple script execution to potentially enable more sophisticated attacks including session hijacking, credential theft, and unauthorized administrative actions. Attackers can leverage this vulnerability to steal cookies, manipulate user sessions, or redirect victims to malicious sites that appear legitimate. In the context of WooCommerce functionality, this presents a significant risk to online stores as authenticated users could have their shopping carts manipulated, orders altered, or sensitive payment information compromised. The vulnerability affects all versions of the Impreza theme through 8.17.4, indicating a prolonged window of exposure that increases the likelihood of exploitation.
Security mitigation strategies should focus on immediate patching to version 8.17.4 or later where the XSS vulnerability has been addressed. Organizations should implement comprehensive input validation and output encoding mechanisms throughout the theme's codebase to prevent similar issues in the future. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and follows ATT&CK technique T1531 for 'Modify System Image' through malicious script injection. Additional defensive measures include implementing Content Security Policy headers, using proper HTML escaping for all dynamic content, and conducting regular security audits of theme and plugin code to identify potential injection points that could lead to similar vulnerabilities.