CVE-2024-33936 in Print-O-Matic Plugin
Summary
by MITRE • 05/03/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Twinpictures Print-O-Matic allows Stored XSS.This issue affects Print-O-Matic: from n/a through 2.1.10.
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Analysis
by VulDB Data Team • 04/02/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability exists within the Twinpictures Print-O-Matic plugin, specifically in how it processes and renders user input during web page generation. The stored nature of this XSS vulnerability means that malicious payloads can be permanently stored on the server and executed whenever affected pages are accessed, rather than requiring immediate interaction with a victim. This allows attackers to persistently compromise user sessions and execute unauthorized actions on behalf of victims.
The technical implementation of this vulnerability stems from inadequate input sanitization and output encoding mechanisms within the Print-O-Matic plugin. When users submit content through the plugin interface, the application fails to properly validate and escape special characters that could be interpreted as HTML or JavaScript code. This improper neutralization creates an attack surface where malicious actors can inject scripts that execute in the context of other users' browsers. The vulnerability affects all versions from the initial release through version 2.1.10, indicating a long-standing issue that has not been adequately addressed in the plugin's codebase.
The operational impact of this vulnerability is severe and multifaceted. Attackers can leverage this stored XSS to hijack user sessions, steal sensitive information such as cookies and authentication tokens, perform unauthorized administrative actions, and potentially gain full control over compromised user accounts. The persistent nature of stored XSS means that the attack can affect multiple users over extended periods without requiring repeated exploitation attempts. Additionally, this vulnerability can be used to deface web pages, redirect users to malicious sites, or harvest personal data from authenticated sessions, making it particularly dangerous for environments where the plugin is used for content management or user interaction.
Organizations using Print-O-Matic should immediately implement mitigations including updating to the latest version of the plugin where the vulnerability has been patched. Network-level protections such as web application firewalls can provide additional defense-in-depth measures by filtering suspicious input patterns. Input validation should be strengthened at multiple layers including client-side and server-side sanitization, with proper HTML escaping implemented for all user-generated content. Security monitoring should include detection of unusual script injection patterns and user behavior anomalies that might indicate exploitation attempts. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a typical attack vector categorized under ATT&CK technique T1566.001 for initial access through malicious web content, making it critical for security teams to prioritize remediation efforts and implement comprehensive monitoring strategies to detect and prevent exploitation attempts.