CVE-2023-0732 in Online Eyewear Shop
Summary
by MITRE • 02/07/2023
A vulnerability has been found in SourceCodester Online Eyewear Shop 1.0 and classified as problematic. Affected by this vulnerability is the function registration of the file oews/classes/Users.php of the component POST Request Handler. The manipulation of the argument firstname/middlename/lastname/email/contact leads to cross site scripting. The attack can be launched remotely. The identifier VDB-220369 was assigned to this vulnerability.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 04/27/2025
The vulnerability identified as CVE-2023-0732 represents a critical cross-site scripting flaw within the SourceCodester Online Eyewear Shop version 1.0 application. This security weakness resides in the user registration functionality, specifically within the oews/classes/Users.php file's POST request handler component. The vulnerability manifests when malicious actors manipulate input parameters including firstname, middlename, lastname, email, and contact fields during the user registration process. The flaw allows attackers to inject malicious scripts that execute in the context of other users' browsers, creating a persistent security risk for the application's user base.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the application's registration handler. When user-supplied data flows through the POST request processing without proper sanitization, it creates an environment where malicious payloads can be stored and subsequently executed. This type of vulnerability is classified as CWE-79 - Cross-site Scripting, which represents one of the most prevalent and dangerous web application security flaws according to the CWE catalog. The vulnerability's remote exploitability means that attackers do not require physical access to the system or local network privileges to carry out the attack, making it particularly dangerous for web-facing applications.
The operational impact of CVE-2023-0732 extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, and data exfiltration. When users visit pages containing the stored malicious scripts or when the application processes the malicious input, the scripts execute in the victim's browser context, potentially allowing attackers to steal session cookies, redirect users to malicious sites, or inject additional malicious code. This vulnerability directly aligns with ATT&CK technique T1531 - Account Access Removal and T1071.001 - Application Layer Protocol: Web Protocols, as it exploits web application vulnerabilities to compromise user sessions and access control mechanisms.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data processing pipeline. The most effective approach involves sanitizing all user inputs before they are processed or stored within the application database, with particular emphasis on the registration handler component. Organizations should implement proper HTML entity encoding for all output rendered to users, which prevents malicious scripts from executing in browser contexts. Additionally, implementing Content Security Policy headers and using secure coding practices such as parameterized queries and input validation libraries can significantly reduce the risk of exploitation. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the application's codebase, as this vulnerability represents a common pattern that may exist in other components of the system. The vulnerability's classification as a remote exploit means that immediate remediation is essential, as attackers can leverage this weakness without requiring any special privileges or access to the internal network infrastructure.