CVE-2022-43076 in Web-based Student Clearance System
Summary
by MITRE • 11/01/2022
A cross-site scripting (XSS) vulnerability in /admin/edit-admin.php of Web-Based Student Clearance System v1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the txtemail parameter.
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Analysis
by VulDB Data Team • 11/30/2022
The cross-site scripting vulnerability identified as CVE-2022-43076 resides within the Web-Based Student Clearance System version 1.0, specifically in the administrative interface at /admin/edit-admin.php. This flaw represents a critical security weakness that enables malicious actors to inject and execute arbitrary web scripts or HTML content through the txtemail parameter. The vulnerability stems from inadequate input validation and output sanitization mechanisms within the application's administrative module, creating an avenue for persistent XSS attacks that can compromise the entire administrative session.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload and injects it into the txtemail parameter of the edit-admin.php endpoint. Upon successful injection, the malicious code executes within the context of the victim's browser, typically an administrator or authorized user with elevated privileges. This creates a persistent XSS vector that can be triggered whenever the affected page is accessed, allowing attackers to steal session cookies, perform unauthorized administrative actions, or redirect users to malicious domains. The vulnerability maps directly to CWE-79, which defines Cross-Site Scripting as a weakness where untrusted data is sent to a web browser without proper validation or encoding.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to complete administrative compromise of the student clearance system. An attacker who successfully exploits this vulnerability gains the ability to manipulate student records, modify clearance statuses, access sensitive personal information, and potentially escalate privileges within the system. The persistent nature of the XSS attack means that any user who views the affected page could be compromised, creating a widespread security risk throughout the administrative environment. This vulnerability particularly threatens the integrity and confidentiality of student data, which often includes personally identifiable information and academic records.
Mitigation strategies for CVE-2022-43076 must focus on implementing robust input validation and output encoding mechanisms throughout the application. The primary defense involves sanitizing all user inputs, particularly those that are reflected in the web interface, using proper HTML encoding techniques before rendering any content. Additionally, implementing Content Security Policy (CSP) headers can significantly reduce the impact of successful XSS attempts by restricting the sources from which scripts can be loaded. The application should also employ proper parameter validation, ensuring that email addresses conform to standard formats and do not contain malicious script content. Security measures aligned with the ATT&CK framework's T1059.002 technique for command and scripting interpreter can help detect and prevent such injection attacks through proper input filtering and monitoring of suspicious parameter values. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other endpoints and ensure that all user-supplied data is properly validated and sanitized before processing or storage.