CVE-2019-12352 in zzcms
Summary
by MITRE • 06/17/2022
An issue was discovered in zzcms 2019. There is a SQL injection Vulnerability in /dl/dl_sendmail.php (when the attacker has dls_print authority) via a dlid cookie.
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Analysis
by VulDB Data Team • 06/17/2022
The vulnerability identified as CVE-2019-12352 represents a critical SQL injection flaw within the zzcms 2019 content management system that specifically affects the /dl/dl_sendmail.php script. This weakness occurs when an authenticated attacker with dls_print authority manipulates the dlid cookie parameter, creating a pathway for malicious SQL commands to be executed against the underlying database. The vulnerability demonstrates a classic lack of input validation and proper parameter sanitization, allowing attackers to manipulate database queries through crafted cookie values.
The technical exploitation of this vulnerability stems from improper handling of user-supplied data within the dl_sendmail.php script. When the dlid cookie value is processed without adequate sanitization or parameterization, it becomes susceptible to SQL injection attacks. This flaw falls under CWE-89 which specifically addresses SQL injection vulnerabilities, where untrusted data is directly incorporated into SQL command strings without proper escaping or parameterization mechanisms. The attack vector requires the attacker to possess dls_print authority, indicating this is an authenticated vulnerability that could be exploited by users with specific permissions within the system's access control model.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation could enable attackers to execute arbitrary database commands, potentially leading to complete system compromise. Attackers could extract sensitive information including user credentials, personal data, and system configurations from the database. The vulnerability's exploitation could also facilitate privilege escalation within the application's user management system, allowing unauthorized access to restricted functionalities. Additionally, attackers might leverage this vulnerability to modify or delete database records, potentially corrupting the application's data integrity. This SQL injection vulnerability aligns with ATT&CK technique T1071.004 which covers application layer protocol manipulation, specifically targeting database communication protocols.
Mitigation strategies for CVE-2019-12352 should prioritize immediate implementation of parameterized queries and input validation measures within the affected script. The development team must ensure all user-supplied data, particularly cookie values, undergo proper sanitization before being incorporated into database queries. Implementing proper access controls and role-based permissions can help limit the impact of this vulnerability by restricting the scope of users who can exploit it. Additionally, regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application. The system should also implement proper error handling to prevent information leakage that could aid attackers in further exploitation attempts. Organizations should consider implementing web application firewalls and database activity monitoring solutions to detect and prevent exploitation attempts. Regular updates and patches should be applied to ensure the application remains protected against known vulnerabilities, with the specific fix involving proper parameterization of the dlid cookie value in the database query execution process.