CVE-2022-45221 in Web-Based Student Clearance System
Summary
by MITRE • 11/29/2022
Web-Based Student Clearance System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability in changepassword.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the txtnew_password parameter.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 04/26/2025
The Web-Based Student Clearance System v1.0 presents a critical cross-site scripting vulnerability that fundamentally compromises user session integrity and data confidentiality. This vulnerability exists within the changepassword.php component, which serves as a critical authentication interface for users managing their account credentials. The flaw represents a classic server-side input validation failure that enables malicious actors to inject malicious payloads directly into the password change workflow. The vulnerability specifically targets the txtnew_password parameter, which processes user input without adequate sanitization or output encoding mechanisms. This weakness creates an exploitable entry point where attackers can manipulate the system's authentication flow and potentially escalate their privileges within the application environment. The vulnerability's presence in a password management function amplifies its potential impact, as it directly affects user account security and could enable unauthorized access to sensitive student information.
The technical exploitation of this XSS vulnerability follows established patterns documented in CWE-79, which categorizes cross-site scripting as a code injection vulnerability that occurs when untrusted data is improperly handled within web applications. The vulnerability manifests when an attacker crafts a malicious payload containing script code within the txtnew_password parameter and submits it through the changepassword.php endpoint. The system fails to properly validate or sanitize this input, allowing the malicious script to execute within the context of other users' browsers who subsequently access the compromised application interface. This execution context enables attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The vulnerability aligns with ATT&CK technique T1566, which describes the use of malicious inputs to compromise applications, and specifically targets the credential access phase of the attack lifecycle where adversaries seek to obtain valid credentials for unauthorized access.
The operational impact of this vulnerability extends beyond simple script execution, creating cascading security implications for the entire student clearance system. When exploited successfully, the XSS vulnerability can enable attackers to manipulate user sessions, access sensitive student data, and potentially compromise the integrity of the entire clearance process. The vulnerability's location within the password change functionality represents a particularly dangerous attack vector, as it directly targets user authentication mechanisms and could facilitate account takeover attacks. Attackers could leverage this vulnerability to inject persistent scripts that would execute whenever legitimate users access the password change interface, creating a stealthy method for maintaining access to the system. The impact is further amplified by the fact that student clearance systems typically contain sensitive personal and academic information, making successful exploitation particularly damaging for both individual privacy and institutional security. Organizations relying on this system face potential regulatory compliance violations and reputational damage if the vulnerability is successfully exploited.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements to prevent similar issues. The primary fix involves implementing robust input validation and output encoding mechanisms within the changepassword.php script to sanitize all user-supplied data before processing. This includes applying proper HTML escaping, implementing Content Security Policy headers, and utilizing secure coding practices that prevent script injection attacks. Organizations should also implement proper parameter validation to ensure that password inputs conform to expected formats and lengths. The remediation process should follow established security frameworks such as OWASP Top Ten recommendations and incorporate automated security testing tools to identify similar vulnerabilities across the application codebase. Additionally, implementing proper access controls and monitoring mechanisms around authentication functions can help detect and prevent exploitation attempts. Regular security assessments and code reviews should be conducted to ensure that similar vulnerabilities do not exist in other components of the system. The fix should also include comprehensive logging and alerting mechanisms to detect suspicious activity around password change operations, which could indicate attempted exploitation of the XSS vulnerability.