CVE-2020-18877 in Wuzhi
Summary
by MITRE • 08/20/2021
SQL Injection in Wuzhi CMS v4.1.0 allows remote attackers to obtain sensitive information via the 'flag' parameter in the component '/coreframe/app/order/admin/index.php'.
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Analysis
by VulDB Data Team • 08/25/2021
The vulnerability identified as CVE-2020-18877 represents a critical SQL injection flaw within the Wuzhi CMS version 4.1.0 content management system. This security weakness exists in the administrative component located at /coreframe/app/order/admin/index.php where the 'flag' parameter fails to properly sanitize user input before incorporating it into database queries. The flaw allows remote attackers to execute arbitrary SQL commands against the underlying database system without authentication, potentially enabling complete database compromise and unauthorized access to sensitive information.
The technical implementation of this vulnerability stems from improper input validation and parameter handling within the application's backend processing logic. When the 'flag' parameter is submitted through the administrative interface, the system concatenates this user-supplied data directly into SQL query strings without adequate sanitization or parameterization. This classic SQL injection pattern enables attackers to manipulate the intended database operations by injecting malicious SQL syntax that can extract, modify, or delete database records. The vulnerability is particularly concerning because it resides within the administrative component, potentially providing attackers with elevated privileges and access to critical system functions.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and potential lateral movement within network environments. An attacker exploiting this flaw could access customer information, user credentials, configuration data, and other sensitive database content stored within the Wuzhi CMS installation. The remote nature of the attack means that exploitation does not require physical access to the system or local network presence, making it particularly dangerous for publicly accessible web applications. This vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws and represents a significant risk to organizations relying on unpatched CMS installations.
Mitigation strategies for CVE-2020-18877 should prioritize immediate patch application from the vendor to address the underlying SQL injection vulnerability. Organizations must implement proper input validation and parameterized queries throughout their application code to prevent similar issues from occurring in other components. Network segmentation and access controls should be enforced to limit administrative interface access to trusted sources only. Additionally, implementing web application firewalls and database activity monitoring can provide additional layers of defense. The vulnerability demonstrates the importance of adhering to secure coding practices and following ATT&CK framework principles for defensive measures against common exploitation techniques. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues across the entire application portfolio. Organizations should also consider implementing automated patch management processes to ensure timely resolution of known vulnerabilities and maintain compliance with industry security standards.