CVE-2006-3759 in MyBB
Summary
by MITRE
Unspecified vulnerability in MyBB (aka MyBulletinBoard) 1.1.4, related has unspecified impact and attack vectors related to "user group manipulation."
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Analysis
by VulDB Data Team • 04/30/2019
The vulnerability identified as CVE-2006-3759 affects MyBB version 1.1.4 and relates to unspecified impact and attack vectors associated with user group manipulation. This represents a critical security flaw within the bulletin board system that could potentially allow unauthorized users to exploit the platform's user management functionality. The unspecified nature of the vulnerability description suggests that the exact technical mechanism of exploitation remains unclear, though the focus on user group manipulation indicates a fundamental weakness in access control and privilege management within the application's core architecture. MyBB 1.1.4, released during a period when web application security was rapidly evolving, contained this vulnerability that could have been leveraged by malicious actors to gain elevated privileges or manipulate user access rights.
The technical flaw associated with user group manipulation typically stems from inadequate input validation, insufficient authorization checks, or flawed privilege escalation mechanisms within the application's user management system. Such vulnerabilities often fall under the CWE classification of privilege escalation or access control issues, where the system fails to properly verify that users have appropriate permissions before allowing modifications to user groups or access levels. The vulnerability may have been present in the way the application handled user group membership changes, group permission assignments, or administrative functions that control user access rights. This type of flaw can enable attackers to manipulate user roles and gain access to restricted features or data that should only be available to authorized administrators or specific user groups.
The operational impact of this vulnerability extends beyond simple user group modifications to encompass potential full system compromise through privilege escalation. Attackers could exploit this weakness to elevate their privileges from regular user to administrator level, gaining access to sensitive administrative functions, user data, and system configuration options. The unspecified attack vectors suggest that multiple pathways might exist for exploitation, potentially including direct parameter manipulation, session hijacking, or other injection techniques that could bypass normal authentication and authorization mechanisms. This vulnerability would have particularly concerning implications for forums with sensitive data or administrative functions, as it could enable unauthorized individuals to completely subvert the platform's security model and gain control over the entire bulletin board system.
Mitigation strategies for this vulnerability should focus on implementing robust access control measures, thorough input validation, and proper authorization checks within the user group management functionality. Security patches and updates to the MyBB platform would be essential to address the underlying flaw, while administrators should conduct comprehensive security reviews of all user management functions. The implementation of proper session management, authentication verification, and privilege validation checks would help prevent unauthorized modifications to user groups. Organizations using MyBB 1.1.4 should consider immediate upgrades to patched versions and implement monitoring for suspicious user group manipulation activities. This vulnerability aligns with ATT&CK techniques related to privilege escalation and credential access, emphasizing the importance of proper access control implementation and regular security assessments to prevent exploitation of such fundamental system weaknesses.