CVE-2020-22820 in MKCMS
Summary
by MITRE • 11/03/2022
MKCMS V6.2 has SQL injection via the /ucenter/repass.php name parameter.
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Analysis
by VulDB Data Team • 12/04/2022
The vulnerability identified as CVE-2020-22820 affects MKCMS version 6.2 and represents a critical SQL injection flaw within the user management component of the content management system. This vulnerability specifically targets the /ucenter/repass.php endpoint where the name parameter is susceptible to malicious input manipulation. The flaw allows attackers to execute arbitrary SQL commands against the underlying database through improper input validation and sanitization practices. Such vulnerabilities typically arise when applications fail to properly escape or parameterize user-supplied data before incorporating it into database queries, creating an attack surface where malicious actors can manipulate the intended query execution flow.
The technical exploitation of this vulnerability occurs when an attacker submits crafted SQL payloads through the name parameter in the password reset functionality. The application processes this input without adequate validation, allowing the malicious SQL code to be executed within the database context. This creates a significant risk of unauthorized data access, modification, or deletion, potentially leading to complete system compromise. The vulnerability aligns with CWE-89 which categorizes SQL injection flaws as weaknesses in software that allows attackers to manipulate database queries through untrusted input. The attack vector specifically maps to the ATT&CK technique T1071.004 which covers application layer protocol manipulation, and T1190 which addresses exploitation of remote services through injection flaws.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to escalate privileges, extract sensitive user credentials, and potentially gain persistence within the affected system. Attackers may leverage this vulnerability to enumerate database structures, access confidential information, or even execute administrative commands. The affected MKCMS system could experience unauthorized access to user accounts, leading to potential identity theft, service disruption, and compliance violations. Organizations using this version of MKCMS face significant risk of data breaches and system compromise, particularly in environments where database credentials have elevated privileges. The vulnerability's impact is amplified by the fact that it resides in a user management endpoint, which typically requires minimal authentication to access, making exploitation relatively straightforward for attackers.
Mitigation strategies for CVE-2020-22820 should prioritize immediate patching of the MKCMS software to the latest version that addresses this specific SQL injection vulnerability. Organizations should implement proper input validation and sanitization measures for all user-supplied parameters, particularly those used in database queries. The implementation of parameterized queries or prepared statements should be enforced throughout the application codebase to prevent SQL injection attacks. Network segmentation and access controls should be enhanced to limit exposure of vulnerable endpoints, while database access should be restricted to only necessary application functions. Security monitoring should be implemented to detect anomalous database access patterns that may indicate exploitation attempts, and regular security assessments should be conducted to identify similar vulnerabilities in other application components. Additionally, organizations should maintain up-to-date vulnerability management processes and ensure all third-party software components are regularly updated to address known security flaws.