CVE-2021-40674 in Wuzhi
Summary
by MITRE • 09/20/2021
An SQL injection vulnerability exists in Wuzhi CMS v4.1.0 via the KeyValue parameter in coreframe/app/order/admin/index.php.
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Analysis
by VulDB Data Team • 09/29/2021
The vulnerability identified as CVE-2021-40674 represents a critical SQL injection flaw within Wuzhi CMS version 4.1.0 that exposes the coreframe application to unauthorized data access and potential system compromise. This vulnerability specifically manifests through the KeyValue parameter within the administrative interface at coreframe/app/order/admin/index.php, where improper input validation allows malicious actors to inject arbitrary SQL commands into the database query execution flow. The flaw stems from insufficient sanitization of user-supplied parameters before incorporating them into database queries, creating an attack surface that directly undermines the integrity of the application's data layer.
The technical implementation of this vulnerability follows standard SQL injection patterns where the KeyValue parameter lacks proper input filtering mechanisms, enabling attackers to manipulate the database query structure through crafted payloads. When the application processes the KeyValue parameter without adequate validation, it directly concatenates user input into SQL statements, allowing attackers to inject malicious SQL syntax that can bypass authentication, extract sensitive data, modify database contents, or even execute administrative commands on the underlying database system. This vulnerability aligns with CWE-89 which categorizes SQL injection as a persistent weakness in software applications where untrusted data is incorporated into database queries without proper sanitization.
From an operational perspective, this vulnerability poses significant risks to organizations using Wuzhi CMS v4.1.0 as it provides attackers with direct access to the application's database backend. Successful exploitation could result in complete data breaches, unauthorized modification of order information, customer data theft, and potential system compromise that may extend beyond the immediate application scope. The administrative context of the vulnerable endpoint increases the attack surface significantly since it provides access to order management functionality, which typically contains sensitive business data including customer information, transaction records, and potentially financial details that could be targeted by threat actors.
The impact of this vulnerability extends beyond immediate data exposure to include potential lateral movement within network environments and escalation to higher privileges within the application framework. Attackers could leverage this vulnerability to establish persistent access patterns, modify application behavior, or use the compromised system as a foothold for broader network infiltration activities. The ATT&CK framework categorizes this type of vulnerability exploitation under T1190 - Exploit Public-Facing Application, where attackers target exposed web applications to gain initial access, and T1071.004 - Application Layer Protocol: DNS, as the attack may involve DNS-based data exfiltration techniques. Organizations should consider implementing comprehensive network segmentation, web application firewalls, and regular security assessments to mitigate such exposure risks.
Mitigation strategies for CVE-2021-40674 should prioritize immediate patching of the Wuzhi CMS application to version 4.1.1 or later where the vulnerability has been addressed through proper input validation and parameter sanitization. Additionally, organizations should implement input validation at multiple layers including application-level filters, database-level query parameterization, and network-level monitoring to detect anomalous SQL query patterns. Regular security audits, code reviews focusing on input handling, and implementation of secure coding practices such as prepared statements and parameterized queries should be enforced to prevent similar vulnerabilities from emerging in future development cycles. The remediation process should also include comprehensive testing of patched applications to ensure that the vulnerability has been properly addressed without introducing new security issues.