CVE-2023-43899 in hansun
Summary
by MITRE • 10/25/2023
hansun CMS v1.0 was discovered to contain a SQL injection vulnerability via the component /ajax/ajax_login.ashx.
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Analysis
by VulDB Data Team • 02/08/2026
The vulnerability identified as CVE-2023-43899 affects hansun CMS version 1.0 and represents a critical SQL injection flaw within the application's authentication mechanism. This vulnerability specifically resides in the /ajax/ajax_login.ashx component which handles user login requests through asynchronous javascript calls. The flaw allows malicious actors to inject arbitrary SQL commands into the database query execution flow, potentially compromising the entire backend database system. The vulnerability stems from inadequate input validation and sanitization within the login processing module, where user-supplied credentials are directly incorporated into SQL queries without proper parameterization or escaping mechanisms.
The technical exploitation of this vulnerability follows standard SQL injection attack patterns where an attacker can manipulate the login form parameters to inject malicious SQL code. When the application processes the login request through the ajax_login.ashx endpoint, it fails to properly validate or sanitize the input data, allowing attackers to craft payloads that can manipulate the underlying database queries. This flaw can be classified under CWE-89 which specifically addresses SQL injection vulnerabilities, and aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications. The attack surface is particularly concerning as it targets the authentication layer, providing potential attackers with privileged access to the application's user database and potentially enabling further escalation attacks.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation could allow attackers to execute arbitrary database commands with the privileges of the database user account. This may result in unauthorized data access, modification, or deletion of sensitive user information including credentials, personal data, and application configuration details. The vulnerability affects the integrity and confidentiality of the entire CMS system, potentially enabling attackers to escalate privileges, create backdoor accounts, or even gain remote code execution capabilities depending on the database configuration and permissions. Organizations using hansun CMS v1.0 are at significant risk of data breaches and unauthorized access to their web applications, particularly in environments where the database contains sensitive user information or business-critical data.
Mitigation strategies for this vulnerability should prioritize immediate patching of the hansun CMS to the latest version that addresses this specific SQL injection flaw. Organizations should implement proper input validation and parameterized queries throughout the application's codebase, particularly in all database interaction points. Network-level protections such as web application firewalls and intrusion detection systems can provide additional defense-in-depth layers to detect and block malicious SQL injection attempts. Regular security code reviews and automated vulnerability scanning should be implemented to identify similar issues in other application components. Access controls and database privilege management should be reviewed to limit the potential damage from successful exploitation attempts. The remediation process should also include monitoring database logs for suspicious activity and implementing proper error handling to prevent information disclosure that could aid attackers in further exploitation attempts.