CVE-2024-29758 in co-marquage service-public.fr Plugin
Summary
by MITRE • 03/27/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kienso Co-marquage service-public.Fr allows Reflected XSS.This issue affects Co-marquage service-public.Fr: from n/a through 0.5.72.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 04/12/2025
The vulnerability identified as CVE-2024-29758 represents a critical cross-site scripting weakness within the Kienso Co-marquage service-public.Fr web application, specifically targeting the reflected XSS attack vector. This flaw resides in the web page generation process where input validation and sanitization mechanisms fail to properly neutralize user-supplied data before incorporating it into dynamically generated web content. The vulnerability affects all versions of the service-public.Fr application from the initial release through version 0.5.72, indicating a persistent security gap that has remained unaddressed for an extended period.
The technical implementation of this vulnerability stems from inadequate input processing within the application's user interface components. When users provide data through web forms or URL parameters, the application fails to properly escape or encode special characters that could be interpreted as HTML or JavaScript code. This improper neutralization creates an environment where malicious actors can inject crafted payloads that execute in the context of other users' browsers. The reflected nature of this XSS vulnerability means that the malicious script is reflected off the web server and delivered to the victim's browser, typically through manipulated URL parameters or form submissions that are immediately processed and displayed without proper sanitization.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as reflected XSS attacks can be leveraged to perform various malicious activities including credential theft, defacement of web pages, redirection to malicious sites, and privilege escalation within the application's user context. Attackers can craft malicious URLs that, when clicked by unsuspecting users, execute scripts that steal session cookies, redirect users to phishing sites, or modify the application's interface to deceive users. The vulnerability affects the entire user base of the service-public.Fr application, potentially compromising thousands of users who interact with the Co-marquage service, particularly those who may be accessing sensitive government or public service information.
Security professionals should note that this vulnerability aligns with CWE-79, which specifically addresses Cross-Site Scripting flaws in web applications, and maps to ATT&CK technique T1531 related to "Use of Web Shell" and T1059.007 for "Command and Scripting Interpreter: JavaScript" within the MITRE ATT&CK framework. The remediation strategy must focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data flow. Organizations should deploy proper HTML escaping for all user-controllable inputs, implement Content Security Policy headers, utilize secure coding practices for web application development, and conduct regular security testing including dynamic application security testing and manual penetration testing to identify similar vulnerabilities. Additionally, the affected versions should be immediately updated to the latest stable release that contains the necessary patches to address this reflected XSS vulnerability.