CVE-2006-4028 in WordPress
Summary
by MITRE
Multiple unspecified vulnerabilities in WordPress before 2.0.4 have unknown impact and remote attack vectors. NOTE: due to lack of details, it is not clear how these issues are different from CVE-2006-3389 and CVE-2006-3390, although it is likely that 2.0.4 addresses an unspecified issue related to "Anyone can register" functionality (user registration for guests).
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 06/24/2019
The vulnerability identified as CVE-2006-4028 represents a critical security flaw in WordPress versions prior to 2.0.4, where multiple unspecified vulnerabilities exist within the platform's core functionality. This issue falls under the broader category of web application security vulnerabilities that can be exploited remotely, potentially allowing unauthorized users to gain elevated privileges or access sensitive system resources. The lack of detailed information about the specific nature of these vulnerabilities makes them particularly concerning for system administrators and security professionals who must assess risk without complete technical specifications.
The technical flaw associated with CVE-2006-4028 appears to be related to the WordPress user registration system, specifically the "Anyone can register" functionality that was available in earlier versions. This vulnerability likely stems from improper input validation or insufficient access controls within the user management subsystem. According to industry standards such as CWE-20, which covers "Improper Input Validation," and CWE-284, which addresses "Improper Access Control," the vulnerability manifests through weaknesses in how WordPress handles user registration requests and authentication processes. The remote attack vectors suggest that malicious actors could exploit these flaws without requiring local system access, making them particularly dangerous for publicly accessible web applications.
The operational impact of CVE-2006-4028 extends beyond simple privilege escalation, as it could potentially allow attackers to create administrator accounts, modify content, or even take full control of the WordPress installation. The "Anyone can register" functionality, when improperly secured, creates an attack surface where unauthorized users can exploit the system to gain unauthorized access to administrative capabilities. This vulnerability aligns with ATT&CK technique T1190, which covers "Exploit Public-Facing Application," and T1078, which deals with "Valid Accounts," as attackers could leverage this vulnerability to establish persistent access to the system through legitimate user accounts. Organizations running vulnerable WordPress installations face significant risk of data breaches, content tampering, and potential system compromise that could affect thousands of users depending on their website's scale.
The remediation strategy for CVE-2006-4028 involves immediate upgrade to WordPress version 2.0.4 or later, which contains fixes specifically addressing the unspecified issues related to user registration functionality. System administrators should also implement additional security measures such as disabling the "Anyone can register" option unless absolutely necessary, implementing proper access controls, and monitoring user registration activities for suspicious patterns. The vulnerability demonstrates the importance of keeping web applications updated with the latest security patches, as outlined in industry best practices for vulnerability management and security operations. Organizations should also conduct regular security assessments to identify similar vulnerabilities in their web applications and ensure proper configuration of user management features to prevent unauthorized access to administrative functions.