CVE-2023-49969 in Customer Support System
Summary
by MITRE • 03/05/2024
Customer Support System v1 was discovered to contain a SQL injection vulnerability via the id parameter at /customer_support/index.php?page=edit_customer.
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Analysis
by VulDB Data Team • 03/29/2025
The vulnerability identified as CVE-2023-49969 represents a critical security flaw within Customer Support System v1, specifically manifesting as a SQL injection vulnerability that undermines the integrity of the application's database interactions. This vulnerability exists within the web application's parameter handling mechanism, where the id parameter in the URL path /customer_support/index.php?page=edit_customer fails to properly sanitize user input before incorporating it into database queries. The flaw allows malicious actors to manipulate the application's backend database through crafted input that gets directly executed as part of SQL commands, potentially leading to unauthorized data access, modification, or deletion.
The technical exploitation of this vulnerability occurs when an attacker submits a specially crafted id parameter value that contains malicious SQL code. When the application processes this input without proper validation or sanitization, the SQL injection payload gets executed within the database context, enabling attackers to bypass authentication mechanisms, extract sensitive customer information, modify existing records, or even gain administrative privileges within the system. This type of vulnerability falls under CWE-89 which specifically addresses SQL injection flaws where untrusted data is incorporated into SQL queries without proper escaping or parameterization. The vulnerability's impact is significantly amplified by the fact that it affects a customer support system, which typically handles sensitive personal and financial data that organizations are required to protect under various data protection regulations.
From an operational perspective, this vulnerability poses severe risks to organizations using Customer Support System v1, as it creates a persistent attack surface that can be exploited by threat actors with minimal technical expertise. The vulnerability's location within the edit_customer page suggests that attackers could potentially modify customer records, impersonate legitimate users, or extract confidential customer information including personal identifiers, contact details, and support history. The attack surface extends beyond simple data theft, as SQL injection vulnerabilities can also enable attackers to escalate privileges and gain deeper access to the underlying system infrastructure. This aligns with ATT&CK technique T1071.004 which covers application layer protocol manipulation, specifically targeting database interactions through injection attacks.
The recommended mitigations for CVE-2023-49969 involve implementing proper input validation and parameterized queries throughout the application codebase. Organizations should immediately implement prepared statements or parameterized queries to ensure that user input is never directly concatenated into SQL commands. Additionally, comprehensive input sanitization measures must be deployed to filter out potentially malicious characters and patterns that could be used in SQL injection attempts. The application should also implement proper access controls and authentication mechanisms to limit the impact of successful exploitation attempts. Regular security code reviews and automated vulnerability scanning should be conducted to identify and remediate similar issues throughout the application's codebase. Organizations should also consider implementing web application firewalls to detect and block suspicious SQL injection patterns at the network level, providing an additional layer of protection against these types of attacks.