CVE-2020-22819 in MKCMS
Summary
by MITRE • 11/03/2022
MKCMS V6.2 has SQL injection via the /ucenter/active.php verify parameter.
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Analysis
by VulDB Data Team • 11/04/2022
The vulnerability identified as CVE-2020-22819 affects MKCMS version 6.2 and represents a critical SQL injection flaw within the user center component of the content management system. This vulnerability specifically resides in the /ucenter/active.php script where the verify parameter is processed without adequate input validation or sanitization measures. The flaw allows remote attackers to execute arbitrary SQL commands against the underlying database through manipulation of the verify parameter, potentially leading to complete database compromise and unauthorized access to sensitive information.
The technical implementation of this vulnerability stems from improper parameter handling within the application's authentication flow. When users attempt to activate their accounts through the user center functionality, the verify parameter is directly incorporated into SQL queries without appropriate escaping or parameterization techniques. This classic SQL injection vector enables attackers to craft malicious input that can bypass authentication mechanisms, extract database contents, modify or delete records, and potentially escalate privileges within the application environment. The vulnerability aligns with CWE-89 which categorizes improper neutralization of special elements used in SQL commands as a fundamental weakness in software security design.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation can lead to full system compromise and persistent access to the affected web application. Attackers can leverage this weakness to gain unauthorized access to user credentials, personal information, and other sensitive data stored within the database. The vulnerability particularly affects organizations relying on MKCMS for user management and authentication, as it undermines the integrity and confidentiality of the entire user database. Additionally, the vulnerability can be exploited to establish backdoor access, modify application behavior, and potentially facilitate further attacks within the network infrastructure.
Mitigation strategies for CVE-2020-22819 should prioritize immediate patching of the affected MKCMS version to address the SQL injection vulnerability. Organizations must implement proper input validation and parameterized queries throughout the application codebase, particularly in authentication and user management components. The implementation of web application firewalls and database activity monitoring can provide additional layers of protection against exploitation attempts. Security hardening measures including disabling unnecessary database functions, implementing least privilege access controls, and regular security testing should be enforced. This vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1190 which covers exploitation of remote services through SQL injection attacks. Organizations should also conduct comprehensive vulnerability assessments to identify similar weaknesses in other components of their web applications and ensure proper security controls are in place to prevent similar incidents from occurring in the future.