CVE-2023-3563 in GZ E Learning Platform
Summary
by MITRE • 07/10/2023
A vulnerability was found in GZ Scripts GZ E Learning Platform 1.8 and classified as problematic. This issue affects some unknown processing of the component URL Parameter Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The identifier VDB-233357 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 07/25/2023
The vulnerability identified as CVE-2023-3563 represents a critical cross-site scripting flaw within the GZ Scripts GZ E Learning Platform version 1.8. This security weakness resides in the URL Parameter Handler component, which processes incoming web requests and handles user input through URL parameters. The vulnerability classification as problematic indicates a significant risk to web application security, particularly given that the flaw allows for remote exploitation without requiring local system access or user interaction beyond visiting a malicious link.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the platform's URL parameter processing logic. When user-supplied parameters are not properly sanitized before being rendered in web responses, malicious actors can inject malicious scripts that execute in the context of other users' browsers. This occurs because the application fails to implement proper sanitization measures that would neutralize potentially dangerous characters and script sequences that could be interpreted as executable code by web browsers. The vulnerability operates at the application layer, specifically targeting the HTTP request handling mechanism where URL parameters are processed and subsequently displayed to end users.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it can enable attackers to perform a wide range of malicious activities including but not limited to cookie theft, session manipulation, and redirection to phishing sites. The remote exploitation capability means that an attacker can trigger this vulnerability simply by crafting a malicious URL and distributing it through various channels such as email, social media, or compromised websites. This makes the vulnerability particularly dangerous in educational environments where users may encounter untrusted content while browsing the learning platform. The attack surface is broad as any URL parameter that gets processed by the vulnerable component could serve as an entry point for exploitation.
Security professionals should address this vulnerability through immediate patching of the affected GZ E Learning Platform version 1.8, implementing proper input validation mechanisms, and deploying web application firewalls that can detect and block malicious parameter injection attempts. The mitigation strategy should include comprehensive parameter sanitization, output encoding, and the implementation of Content Security Policies to prevent unauthorized script execution. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and it maps to attack techniques within the ATT&CK framework under the T1059.007 category for scripting and T1566 for phishing, emphasizing the need for layered security approaches that include both application-level defenses and user education initiatives to prevent successful exploitation attempts.