CVE-2021-40282 in zzcms
Summary
by MITRE • 12/09/2021
An SQL Injection vulnerability exists in zzcms 8.2, 8.3, 2020, abd 2021 in dl/dl_download.php. when registering ordinary users.
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Analysis
by VulDB Data Team • 12/15/2021
The SQL Injection vulnerability identified as CVE-2021-40282 affects zzcms versions 8.2, 8.3, 2020, and 2021, specifically within the dl/dl_download.php component during the ordinary user registration process. This vulnerability represents a critical security flaw that allows malicious actors to manipulate database queries through crafted input parameters. The issue stems from insufficient input validation and sanitization mechanisms within the user registration workflow, creating an avenue for unauthorized database access and potential data compromise.
The technical exploitation of this vulnerability occurs when ordinary users register through the affected system, as the dl_download.php script fails to properly sanitize user-supplied data before incorporating it into SQL queries. This flaw falls under CWE-89 which specifically addresses SQL injection vulnerabilities, where untrusted data is directly concatenated into SQL command strings without proper escaping or parameterization. Attackers can leverage this weakness by submitting malicious SQL payloads through registration fields, potentially executing arbitrary database commands with the privileges of the application's database user.
The operational impact of CVE-2021-40282 extends beyond simple data theft, as it enables attackers to perform comprehensive database enumeration, data modification, and unauthorized access to sensitive user information. Successful exploitation could result in complete database compromise, allowing threat actors to extract personal user data, modify account credentials, or even escalate privileges to gain administrative control over the affected system. The vulnerability particularly affects systems where user registration is enabled, making it a significant concern for organizations relying on zzcms for content management or user interaction platforms.
Security mitigations for this vulnerability should focus on implementing proper input validation and parameterized queries throughout the registration process. Organizations must ensure that all user inputs are properly sanitized and validated before being processed by database operations. The recommended approach includes implementing prepared statements or parameterized queries to prevent malicious SQL code execution, along with comprehensive input filtering and sanitization routines. Additionally, regular security updates and patches should be applied immediately upon availability, as this vulnerability affects multiple versions of the zzcms platform and represents a persistent risk that requires immediate remediation. This vulnerability aligns with ATT&CK technique T1190 which covers exploitation of vulnerabilities in software applications, emphasizing the need for robust application security measures and timely patch management protocols.