CVE-2020-29147 in Wayang
Summary
by MITRE • 07/15/2021
A SQL injection vulnerability in wy_controlls/wy_side_visitor.php of Wayang-CMS v1.0 allows attackers to obtain sensitive database information.
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Analysis
by VulDB Data Team • 07/18/2021
The SQL injection vulnerability identified as CVE-2020-29147 exists within the Wayang-CMS v1.0 content management system, specifically within the wy_controlls/wy_side_visitor.php script. This flaw represents a critical security weakness that enables malicious actors to manipulate database queries through improperly sanitized input parameters. The vulnerability falls under the category of CWE-89 SQL Injection, which is classified as a common weakness in web applications where user input is directly incorporated into SQL commands without proper validation or sanitization. The attack vector occurs when an attacker submits malicious input through the visitor management functionality, potentially allowing unauthorized access to sensitive database information including user credentials, personal data, and system configuration details.
The technical implementation of this vulnerability stems from the application's failure to properly escape or parameterize user-supplied input before incorporating it into database queries. When the wy_side_visitor.php script processes visitor-related data, it likely concatenates user input directly into SQL statements without adequate input validation or prepared statement usage. This allows attackers to inject malicious SQL code that can manipulate the database query execution flow, potentially leading to data extraction, modification, or deletion. The vulnerability is particularly dangerous because it affects core visitor management functionality, which may be accessible to unauthenticated users or those with limited privileges, expanding the attack surface significantly.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable more sophisticated attacks including privilege escalation, data corruption, and potential system compromise. Attackers can exploit this weakness to extract sensitive information such as user accounts, session tokens, and database schema details that could facilitate further attacks. The vulnerability also poses risks to data integrity and availability, as malicious actors could potentially modify or delete critical visitor records. From an ATT&CK framework perspective, this vulnerability maps to T1071.004 Application Layer Protocol: DNS and T1046 Network Service Scanning, as attackers may use this vulnerability to map network services and gather intelligence. Additionally, the compromise of visitor data could lead to privacy violations and regulatory compliance issues under standards such as GDPR or HIPAA.
Mitigation strategies for CVE-2020-29147 should prioritize immediate patching of the affected Wayang-CMS v1.0 installation with the vendor-provided security update. Organizations should implement proper input validation and parameterized queries throughout the application to prevent similar vulnerabilities in the future. The implementation of web application firewalls and database activity monitoring can provide additional layers of protection. Security teams should conduct comprehensive vulnerability assessments to identify other potential SQL injection points within the application and related systems. Regular security testing including penetration testing and code reviews should be implemented to maintain robust security posture. The use of prepared statements and stored procedures instead of dynamic SQL construction can prevent this class of vulnerability from reoccurring in future development cycles. Organizations should also establish incident response procedures to quickly address any exploitation attempts and ensure proper forensic analysis of compromised systems.