A NULL pointer dereference in the main function of TOTOLINK N600R v4
Description
A NULL pointer dereference in the main function of TOTOLINK N600R v4
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
Executive Summary:
A critical vulnerability has been discovered in SourceCodester Pet Grooming Management Software, allowing unauthenticated attackers to compromise the application's database. Successful exploitation of this flaw could lead to the theft, modification, or deletion of sensitive business and customer data, posing a significant risk to the confidentiality and integrity of the system.
Vulnerability Details
CVE-ID: CVE-2025-60316
Affected Software: SourceCodester Pet Grooming Management Software Multiple Products
Affected Versions: Version 1.0 is confirmed vulnerable. See vendor advisory for a complete list of affected products and versions.
Vulnerability: The vulnerability is a SQL Injection flaw within the
admin/view_customer.phpcomponent of the software. The application fails to properly sanitize user-supplied input provided to theIDparameter. An unauthenticated remote attacker can exploit this by sending a specially crafted HTTP request containing malicious SQL queries in theIDparameter, which are then executed directly by the backend database. This allows the attacker to bypass authentication, read, modify, or delete any data in the database, and in some configurations, execute commands on the underlying operating system.Business Impact
This vulnerability is rated as critical severity with a CVSS score of 9.4, reflecting the high potential for significant business disruption. A successful attack could lead to a severe data breach, exposing sensitive customer information such as names, addresses, and contact details. The consequences include loss of data integrity, reputational damage, loss of customer trust, and potential financial penalties under data protection regulations. Furthermore, if the database service has excessive privileges, the attacker could pivot from the database to gain full control of the web server, expanding their foothold within the network.
Remediation Plan
Immediate Action: Organizations must immediately update the SourceCodester Pet Grooming Management Software to the latest patched version as recommended by the vendor. After patching, it is crucial to monitor for any signs of exploitation attempts by reviewing application and web server access logs for suspicious activity targeting the
admin/view_customer.phpfile.Proactive Monitoring: Review web server and database logs for requests to
admin/view_customer.phpcontaining SQL keywords (e.g.,UNION,SELECT,',--) or unusual syntax in theIDparameter. Monitor for anomalous outbound network traffic from the database server, which could indicate data exfiltration. Implement a Web Application Firewall (WAF) to detect and block common SQL Injection attack patterns.Compensating Controls: If patching is not immediately feasible, implement the following controls to mitigate risk:
/admin/directory to authorized personnel and trusted IP addresses only.Exploitation Status
Public Exploit Available: true
Analyst Notes: As of October 9, 2025, there are no publicly reported, widespread campaigns actively exploiting this vulnerability. However, due to the trivial nature of exploiting a URL-based SQL Injection, proof-of-concept (PoC) exploit code is readily available and can be easily developed by threat actors. SourceCodester products are frequently used by small to medium-sized businesses, which may be targeted by opportunistic attackers scanning for vulnerable systems.
Analyst Recommendation
Given the critical CVSS score of 9.4 and the high potential for complete database compromise, it is strongly recommended that all organizations using the affected software apply the vendor-supplied patches immediately. Although this vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog, its critical severity and ease of exploitation demand urgent attention. All internet-facing instances of this software should be prioritized for patching without delay, and organizations should assume compromise if any related suspicious activity is found.