CVE-2024-53735: iPhone Webclip Manager XSS Vulnerability

CVE-2024-53735 Overview

CVE-2024-53735 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the iPhone Webclip Manager WordPress plugin developed by Corourke. The vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject and persist malicious scripts within the application. This Stored XSS flaw can be exploited through a Cross-Site Request Forgery (CSRF) attack vector, creating a chained vulnerability that increases the overall risk to affected WordPress installations.

Critical Impact

Attackers can inject persistent malicious scripts that execute in the browsers of users who access affected pages, potentially leading to session hijacking, credential theft, defacement, and further compromise of the WordPress installation.

Affected Products

• iPhone Webclip Manager WordPress Plugin version 0.5 and earlier
• WordPress installations running the vulnerable plugin versions

Discovery Timeline

• 2026-01-05 - CVE-2024-53735 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2024-53735

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The iPhone Webclip Manager plugin fails to properly sanitize user-supplied input before storing it in the database and subsequently rendering it on web pages. This allows malicious JavaScript code to be persistently stored and executed whenever an administrator or user views the affected content.

The attack requires user interaction, as the attacker must trick an authenticated administrator into performing an action that triggers the CSRF component, which then enables the stored XSS payload to be injected. Once stored, the malicious script executes automatically in the context of any user's browser session when viewing the compromised page, potentially affecting both administrators and site visitors.

Root Cause

The root cause of this vulnerability lies in the lack of proper input validation and output encoding within the iPhone Webclip Manager plugin. The plugin does not implement adequate sanitization routines for user-controlled input fields, nor does it properly escape data before rendering it in HTML contexts. Additionally, the absence of CSRF token validation allows attackers to craft malicious requests that can be executed on behalf of authenticated administrators.

Attack Vector

The attack is network-based and requires user interaction. An attacker crafts a malicious web page or link containing a CSRF payload targeting an authenticated WordPress administrator. When the administrator visits the attacker-controlled page, the CSRF attack silently submits a request to the vulnerable plugin, injecting a stored XSS payload. This payload persists in the WordPress database and executes in the browser of any subsequent visitor who views the affected content.

The attack chain typically involves:

1. Attacker identifies a WordPress site running the vulnerable iPhone Webclip Manager plugin
2. Attacker crafts a CSRF exploit that injects malicious JavaScript into a plugin setting or data field
3. Attacker tricks an administrator into visiting a malicious page or clicking a link
4. The CSRF exploit executes, storing the XSS payload in the database
5. The stored XSS executes whenever users access the affected pages

Detection Methods for CVE-2024-53735

Indicators of Compromise

• Unexpected JavaScript code present in plugin settings or data fields stored in the WordPress database
• Suspicious outbound network requests from user browsers when accessing WordPress admin pages
• Reports of browser warnings or unexpected behavior when administrators access the plugin settings
• Evidence of unauthorized modifications to plugin configurations

Detection Strategies

• Implement Content Security Policy (CSP) headers to detect and block inline script execution attempts
• Monitor WordPress database tables associated with the iPhone Webclip Manager plugin for suspicious content
• Review web server access logs for unusual POST requests to plugin endpoints from external referrers
• Deploy web application firewall (WAF) rules to detect XSS payload patterns in incoming requests

Monitoring Recommendations

• Enable WordPress security audit logging to track changes to plugin settings and configurations
• Configure browser-based XSS auditor alerts in monitoring dashboards
• Set up alerts for unexpected JavaScript execution patterns on WordPress administrative pages
• Monitor for CSRF attack patterns including requests to plugin endpoints with suspicious referrer headers

How to Mitigate CVE-2024-53735

Immediate Actions Required

• Disable or deactivate the iPhone Webclip Manager plugin until a patched version becomes available
• Review plugin database entries for any injected malicious content and sanitize if found
• Implement a Web Application Firewall (WAF) with XSS and CSRF protection rules
• Audit WordPress admin user sessions for any suspicious activity

Patch Information

At the time of disclosure, the vulnerability affects iPhone Webclip Manager version 0.5 and all prior versions. Organizations should monitor the Patchstack Vulnerability Database for updates regarding vendor patches. If no patch is released, consider migrating to an alternative plugin that provides similar functionality with active security maintenance.

Workarounds

• Remove the iPhone Webclip Manager plugin entirely if the functionality is not critical to operations
• Restrict WordPress admin panel access to trusted IP addresses only using firewall rules or .htaccess configurations
• Implement additional CSRF protection through WordPress security plugins that add nonce verification
• Deploy Content Security Policy headers to mitigate the impact of any stored XSS payloads

# Example: Add Content-Security-Policy header in Apache .htaccess
# This helps mitigate XSS attacks by restricting script sources
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'"

# Example: Restrict admin access by IP in .htaccess
<Files wp-login.php>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>