CVE-2016-10943 in zx-csv-upload Plugin
Summary
by MITRE
The zx-csv-upload plugin 1 for WordPress has SQL injection via the id parameter.
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Analysis
by VulDB Data Team • 12/19/2023
The zx-csv-upload plugin version 1 for WordPress presents a critical SQL injection vulnerability that arises from improper input validation within the id parameter handling. This vulnerability exists within the plugin's database interaction logic where user-supplied input is directly incorporated into SQL query constructions without adequate sanitization or parameterization. The flaw allows malicious actors to inject arbitrary SQL commands through the id parameter, potentially enabling unauthorized access to the underlying database system. The vulnerability is particularly concerning as it affects a widely used content management system platform where plugins often have elevated privileges and can access sensitive data stores.
The technical implementation of this SQL injection vulnerability stems from the plugin's failure to properly escape or parameterize user input before incorporating it into database queries. When the id parameter is processed, the plugin constructs SQL statements by directly concatenating the user-provided value into the query string rather than using prepared statements or proper input sanitization mechanisms. This creates an environment where attackers can manipulate the SQL execution flow by injecting malicious payloads that alter the intended query structure. The vulnerability is classified as a classic injection flaw that aligns with CWE-89, which specifically addresses SQL injection vulnerabilities in software applications.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to perform complete database compromise operations including data manipulation, unauthorized user creation, privilege escalation, and potential system-wide exploitation. An attacker could leverage this vulnerability to extract sensitive information such as user credentials, personal data, and administrative access details stored within the WordPress database. The attack surface is particularly dangerous because WordPress installations often contain valuable data and the plugin's SQL injection flaw can be exploited without requiring authentication, making it a prime target for automated exploitation tools. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under the T1190 category for exploitation of remote services.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary solution involves updating to a patched version of the zx-csv-upload plugin where proper input validation and parameterized queries have been implemented. Organizations should also implement web application firewalls to detect and block suspicious SQL injection patterns, while conducting thorough input validation at multiple layers of the application stack. Database access controls should be reviewed to ensure that the plugin's database user account has minimal required privileges, following the principle of least privilege. Additionally, regular security assessments and code reviews should be performed to identify similar input handling vulnerabilities in other plugins and custom code implementations. The vulnerability underscores the importance of proper database interaction patterns and the necessity of adhering to secure coding practices that prevent injection attacks through proper parameterization and input sanitization mechanisms.