CVE-2025-5696: Brilliance Golden Link SQL Injection Flaw

CVE-2025-5696 Overview

A SQL injection vulnerability has been identified in Brilliance Golden Link Secondary System up to version 20250424. This vulnerability exists in the file /storagework/rentChangeCheckInfoPage.htm and can be exploited through manipulation of the clientname parameter. The flaw allows remote attackers with low privileges to inject malicious SQL commands, potentially compromising data confidentiality, integrity, and availability.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, data modification, or denial of service.

Affected Products

• Brilliance Golden Link Secondary System (versions up to 20250424)

Discovery Timeline

• June 5, 2025 - CVE-2025-5696 published to NVD
• November 6, 2025 - Last updated in NVD database

Technical Details for CVE-2025-5696

Vulnerability Analysis

This vulnerability is classified as SQL Injection (CWE-89) and Injection (CWE-74). The flaw resides in the rentChangeCheckInfoPage.htm endpoint, which fails to properly sanitize user-supplied input in the clientname parameter before incorporating it into SQL queries. This allows an authenticated attacker to inject arbitrary SQL syntax that gets executed by the backend database.

The vulnerability is network-accessible, meaning attackers can exploit it remotely without requiring physical access to the target system. While the attack requires low-level privileges, it does not require user interaction, making it relatively straightforward to exploit once an attacker has obtained basic authentication credentials.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the application's data access layer. The clientname parameter is directly concatenated into SQL query strings without proper escaping or the use of prepared statements, allowing SQL syntax to be injected through the parameter value.

Attack Vector

The attack is initiated remotely over the network by sending specially crafted HTTP requests to the vulnerable endpoint at /storagework/rentChangeCheckInfoPage.htm. An attacker with low-level privileges can manipulate the clientname parameter to inject SQL commands. The exploit has been publicly disclosed, increasing the risk of exploitation in the wild.

Successful exploitation could allow attackers to extract sensitive data from the database, modify or delete records, or potentially escalate privileges within the application. For more technical details, refer to the GitHub resource document and VulDB entry #311212.

Detection Methods for CVE-2025-5696

Indicators of Compromise

• Unusual HTTP requests to /storagework/rentChangeCheckInfoPage.htm containing SQL syntax characters in the clientname parameter (single quotes, double dashes, UNION, SELECT, etc.)
• Database errors or anomalies in application logs indicating malformed SQL queries
• Unexpected database query patterns or excessive data retrieval operations
• Web application firewall alerts for SQL injection attempts targeting the vulnerable endpoint

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block SQL injection patterns in requests to the affected endpoint
• Implement application-level logging to monitor all requests to /storagework/rentChangeCheckInfoPage.htm
• Configure database activity monitoring to alert on suspicious query patterns or unauthorized data access
• Use intrusion detection systems with SQL injection signature rules

Monitoring Recommendations

• Monitor HTTP access logs for requests containing SQL injection payloads targeting the clientname parameter
• Set up alerts for database errors that may indicate SQL injection attempts
• Review authentication logs for accounts making suspicious requests to the vulnerable endpoint
• Implement real-time monitoring of database query execution times and data volumes

How to Mitigate CVE-2025-5696

Immediate Actions Required

• Restrict network access to the vulnerable endpoint /storagework/rentChangeCheckInfoPage.htm using firewall rules or access control lists
• Implement input validation on the clientname parameter to reject requests containing SQL metacharacters
• Deploy a web application firewall with SQL injection protection rules
• Review and audit database accounts for least-privilege access
• Monitor system logs for any signs of exploitation attempts

Patch Information

At the time of publication, no official vendor patch information is available. Organizations should monitor the vendor's official channels for security updates. Additional vulnerability details and tracking information are available through VulDB CTI ID #311212 and the associated submission #588316.

Workarounds

• Implement a web application firewall rule to block requests containing SQL injection patterns in the clientname parameter
• Use network segmentation to limit access to the Golden Link Secondary System to trusted networks only
• Apply input validation at the application proxy level to sanitize the clientname parameter
• Consider temporarily disabling the affected functionality until a vendor patch is available

# Example WAF rule to block SQL injection attempts (ModSecurity format)
SecRule ARGS:clientname "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt blocked in clientname parameter',\
    log"