CVE-2023-48985 in Content Management System
Summary
by MITRE • 02/14/2024
Cross Site Scripting (XSS) vulnerability in CU Solutions Group (CUSG) Content Management System (CMS) before v.7.75 allows a remote attacker to execute arbitrary code, escalate privileges, and obtain sensitive information via a crafted script to the login.php component.
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Analysis
by VulDB Data Team • 03/19/2025
This cross site scripting vulnerability exists within the CU Solutions Group Content Management System prior to version 7.75 and represents a critical security flaw that enables remote attackers to execute malicious code through the login.php component. The vulnerability stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before processing it within the authentication flow. Attackers can craft malicious scripts that exploit this weakness to inject malicious payloads into the login interface, potentially compromising user sessions and gaining unauthorized access to sensitive system resources.
The technical implementation of this vulnerability aligns with CWE-79 which describes improper neutralization of input during web page generation in a web application, making it a classic XSS attack vector. The flaw specifically affects the login.php component where user credentials and other input fields are processed without adequate sanitization measures. This creates an environment where malicious actors can inject script code that executes in the context of other users' browsers, potentially leading to session hijacking, privilege escalation, and data exfiltration. The vulnerability operates at the application layer and can be exploited through various vectors including reflected and stored XSS techniques.
The operational impact of this vulnerability extends beyond simple code execution to encompass potential privilege escalation and sensitive data access. Remote attackers can leverage the XSS flaw to manipulate user sessions, potentially gaining administrative privileges or accessing confidential information stored within the CMS. The attack surface is particularly concerning given that the vulnerability affects the login component, which serves as the primary entry point for user authentication. Successful exploitation could result in complete system compromise, unauthorized data access, and potential lateral movement within network environments where the CMS is deployed.
Organizations utilizing CU Solutions Group CMS versions prior to 7.75 should prioritize immediate remediation through the application of vendor-provided patches and security updates. The recommended mitigation strategy includes implementing proper input validation and output encoding mechanisms throughout the application, specifically within the login.php component and related authentication modules. Security controls should be enhanced to include web application firewalls that can detect and block malicious script injection attempts, while also implementing content security policies to prevent unauthorized script execution. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities within the application architecture, with particular attention to input handling mechanisms across all user-facing components. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing comprehensive application security controls as outlined in the ATT&CK framework's application layer techniques.