CVE-2024-33989 in School Event Management System
Summary
by MITRE • 08/06/2024
Cross-Site Scripting (XSS) vulnerability in School Event Management System affecting version 1.0. An attacker could exploit this vulnerability by sending a specially crafted javascript payload to an authenticated user and partially take over their browser session via the 'eventdate' and 'events' parameters in 'port/event_print.php'.
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Analysis
by VulDB Data Team • 03/15/2025
The Cross-Site Scripting vulnerability identified as CVE-2024-33989 resides within the School Event Management System version 1.0, representing a critical security flaw that undermines user session integrity and system confidentiality. This vulnerability specifically targets the event_print.php endpoint within the port directory, where the application fails to properly sanitize user input parameters. The flaw manifests when authenticated users receive malicious payloads through the 'eventdate' and 'events' parameters, creating an avenue for persistent threat actors to execute malicious scripts within the victim's browser context. The vulnerability classification aligns with CWE-79 which defines Cross-Site Scripting as a weakness where untrusted data is incorporated into web page content without proper validation or encoding, making it susceptible to injection attacks.
The technical exploitation of this vulnerability occurs through the manipulation of input fields that are directly reflected in the application's output without adequate sanitization measures. When an attacker crafts a malicious JavaScript payload and injects it through the vulnerable 'eventdate' or 'events' parameters, the system processes this input without proper context-aware encoding or validation. The reflected nature of this vulnerability means that the malicious script executes in the victim's browser when they view the affected page, potentially allowing attackers to steal session cookies, redirect users to malicious sites, or perform unauthorized actions on behalf of the authenticated user. This type of vulnerability operates under the ATT&CK framework category of T1531 which covers "Modify System Image" and T1566 which addresses "Phishing", demonstrating how the vulnerability can be leveraged for both session hijacking and social engineering attacks.
The operational impact of CVE-2024-33989 extends beyond simple data theft, as it provides attackers with the capability to partially compromise user browser sessions and potentially escalate privileges within the school event management system. An attacker who successfully exploits this vulnerability could intercept sensitive educational data, manipulate event schedules, or gain unauthorized access to administrative functions that require authenticated sessions. The vulnerability's location within the event_print.php endpoint suggests that it affects all users who can access event-related print functionality, potentially compromising a wide range of system users including administrators, teachers, and staff members. The partial session takeover capability indicates that while full system compromise may not be immediately achievable, the attacker can establish persistent access patterns that could lead to more severe security incidents over time. This vulnerability represents a significant risk to educational institutions as it could be exploited to disrupt school operations, compromise student data, or facilitate broader network infiltration attempts.
Mitigation strategies for CVE-2024-33989 should focus on implementing robust input validation and output encoding mechanisms throughout the application's data flow. The most effective immediate solution involves sanitizing all user-supplied input through proper encoding techniques, particularly HTML entity encoding for parameters passed to the event_print.php endpoint. Developers should implement Content Security Policy headers to prevent unauthorized script execution and ensure that all input parameters undergo strict validation before being processed or displayed. The application should employ parameterized queries and context-aware encoding to prevent script injection regardless of input source. Additionally, implementing proper session management controls including secure cookie attributes, session timeout mechanisms, and regular session regeneration can help minimize the impact of any successful exploitation attempts. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other application components, while also ensuring that all system updates and patches are applied promptly to address known security flaws. The implementation of web application firewalls and input validation layers can provide additional defense-in-depth measures to protect against similar injection attacks targeting the application's user interface components.