CVE-2011-4555 in One Click Orgs
Summary
by MITRE
One Click Orgs before 1.2.3 does not require unique e-mail addresses for user accounts, which allows remote authenticated users to cause a denial of service (login disruption) or spoof votes or comments by selecting a conflicting e-mail address.
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Analysis
by VulDB Data Team • 01/28/2018
The vulnerability identified as CVE-2011-4555 affects the One Click Orgs platform prior to version 1.2.3, representing a critical security flaw in user account management and authentication mechanisms. This weakness stems from the platform's failure to enforce unique email address requirements for user accounts, creating a fundamental breach in the system's identity verification process. The issue manifests as a lack of input validation and sanitization within the user registration and authentication workflows, allowing malicious actors to exploit the system's permissive account creation policies.
The technical implementation of this vulnerability enables attackers to manipulate the platform's user authentication and authorization systems through deliberate email address conflicts. When multiple users attempt to register with the same email address, the system's inability to enforce uniqueness creates cascading effects that disrupt normal operational procedures. This flaw operates at the application layer and specifically targets the user account management component, making it particularly dangerous for collaborative platforms where user identity verification is crucial for maintaining data integrity and system security.
The operational impact of this vulnerability extends beyond simple account conflicts to encompass significant denial of service conditions and data integrity violations. Remote authenticated users can exploit this weakness to cause login disruptions by creating conflicting user accounts that interfere with legitimate authentication processes. Additionally, the vulnerability enables sophisticated spoofing attacks where malicious users can manipulate vote and comment systems by leveraging conflicting email addresses to associate unauthorized actions with legitimate user identities. This creates a scenario where legitimate users may be unable to access their accounts while attackers can effectively impersonate them within the system's collaborative features.
From a cybersecurity perspective, this vulnerability aligns with multiple CWE classifications including CWE-200 for exposure of sensitive information and CWE-305 for authentication bypass mechanisms. The flaw also maps to ATT&CK techniques related to credential access and privilege escalation, as attackers can exploit the email address conflict to gain unauthorized access to user accounts and manipulate system data. The vulnerability demonstrates poor input validation practices and inadequate account management controls that violate fundamental security principles for user authentication systems.
Mitigation strategies for this vulnerability require immediate implementation of unique email address validation mechanisms within the user registration process. System administrators should enforce strict email uniqueness checks during account creation and update processes, ensuring that no two active accounts can share the same email address. The platform should implement robust input sanitization and validation procedures to prevent duplicate email submissions, while also establishing proper account recovery mechanisms to handle legitimate user requests for account access. Additionally, the system should incorporate audit logging to track email address conflicts and unauthorized account modifications, providing security teams with visibility into potential exploitation attempts. Regular security assessments and code reviews should be conducted to prevent similar vulnerabilities from emerging in future system updates and modifications.