CVE-2017-18570 in cforms2 Plugin
Summary
by MITRE
The cforms2 plugin before 14.13 for WordPress has SQL injection in the tracking DB GUI via Delete Entries or Download Entries.
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Analysis
by VulDB Data Team • 12/01/2023
The cforms2 plugin for WordPress represents a widely used form management solution that allows users to create custom contact forms and manage submissions. This particular vulnerability affects versions prior to 14.13 and specifically targets the tracking database graphical user interface component. The flaw exists within the plugin's handling of user input when processing administrative actions related to form data management. Attackers can exploit this vulnerability by manipulating parameters associated with the Delete Entries and Download Entries functions within the plugin's administrative dashboard.
The technical implementation of this SQL injection vulnerability stems from insufficient input validation and sanitization within the plugin's database query construction process. When administrators attempt to delete or download form entries through the GUI, the plugin fails to properly escape or parameterize user-supplied data before incorporating it into SQL queries. This allows malicious actors to inject arbitrary SQL commands that execute within the context of the database connection. The vulnerability is particularly dangerous because it operates within the administrative interface, meaning that successful exploitation requires only standard user privileges rather than elevated administrative access.
The operational impact of this vulnerability extends beyond simple data theft or modification. An attacker who successfully exploits this vulnerability can potentially gain unauthorized access to all form submission data stored within the WordPress database. This includes sensitive information submitted through contact forms, user registrations, and other data collection mechanisms. The attack vector is particularly concerning because it targets the administrative functions that are frequently used by legitimate administrators, making detection more difficult. The vulnerability also enables potential data exfiltration, data corruption, or even complete database compromise depending on the attacker's privileges and the underlying database configuration.
Mitigation strategies for this vulnerability require immediate patching of the cforms2 plugin to version 14.13 or later, which implements proper input validation and parameterized queries. Administrators should also implement network-level restrictions to limit access to the WordPress administrative interface, particularly for functions that handle sensitive data operations. The principle of least privilege should be enforced by ensuring that only necessary personnel have access to the form management features. Additionally, regular database monitoring should be implemented to detect unusual query patterns that might indicate exploitation attempts. This vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws, and represents a typical example of how insecure input handling can lead to critical database compromise. Organizations should also consider implementing web application firewalls and database activity monitoring solutions to detect and prevent exploitation attempts. The ATT&CK framework categorizes this as a database access technique where adversaries leverage application vulnerabilities to gain unauthorized data access, highlighting the importance of securing administrative interfaces that handle sensitive data operations.