CVE-2024-33787 is a SQL injection vulnerability identified in the Hengan Weighing Management Information Query Platform versions 2019-2021 53.25. The vulnerability arises from improper sanitization of the tuser_Number parameter in the search_user.aspx web page, which allows attackers to inject malicious SQL code. This injection flaw enables unauthenticated remote attackers to manipulate backend database queries, potentially extracting sensitive data or partially modifying data integrity. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). According to the CVSS 3.1 vector, the attack vector is network-based (AV:N), requires no privileges (PR:N), no user interaction (UI:N), and affects confidentiality to a high degree (C:H), with limited integrity impact (I:L) and no availability impact (A:N). Although no public exploits have been reported yet, the ease of exploitation combined with the critical confidentiality impact makes this a significant threat. The platform is used in industrial and commercial weighing management, which may involve sensitive operational data. The absence of available patches at the time of reporting necessitates immediate attention to alternative mitigation strategies such as input validation and database query hardening.

The primary impact of this vulnerability is unauthorized disclosure of sensitive information stored in the backend database, which could include user credentials, operational data, or proprietary business information. Attackers exploiting this flaw can retrieve confidential data without authentication, leading to potential data breaches and privacy violations. Although the integrity impact is limited, attackers might still manipulate some data, causing inconsistencies or erroneous records. The availability of the system is not directly affected, so denial-of-service is unlikely. Organizations relying on this platform for critical weighing and management operations could face operational risks if sensitive data is exposed or altered. The vulnerability's network accessibility and lack of authentication requirements increase the risk of widespread exploitation, especially in environments where the platform is exposed to the internet or untrusted networks. This could lead to reputational damage, regulatory penalties, and financial losses for affected organizations.

1. Apply official patches or updates from the vendor as soon as they become available to address the SQL injection vulnerability directly. 2. In the absence of patches, implement strict input validation on the tuser_Number parameter to allow only expected input formats (e.g., numeric or alphanumeric constraints). 3. Use parameterized queries or prepared statements in the backend code to prevent SQL injection attacks by separating code from data. 4. Restrict database user permissions to the minimum necessary, avoiding elevated privileges that could be exploited through injection. 5. Employ web application firewalls (WAFs) with rules designed to detect and block SQL injection attempts targeting the vulnerable parameter. 6. Conduct regular security assessments and code reviews focusing on input handling and database interactions. 7. Monitor logs for unusual query patterns or repeated failed attempts to exploit the vulnerability. 8. Segment and isolate the affected platform within the network to limit exposure to untrusted sources. 9. Educate developers and administrators about secure coding practices and the risks of SQL injection.