CVE-2024-1643 in lunary
Summary
by MITRE • 04/10/2024
By knowing an organization's ID, an attacker can join the organization without permission and gain the ability to read and modify all data within that organization. This vulnerability allows unauthorized access and modification of sensitive information, posing a significant security risk. The flaw is due to insufficient verification of user permissions when joining an organization.
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Analysis
by VulDB Data Team • 05/16/2024
This vulnerability represents a critical authorization flaw that undermines fundamental security controls within organizational access management systems. The issue stems from inadequate validation mechanisms that fail to properly authenticate user identity before granting organizational membership privileges. Attackers can exploit this weakness by simply knowing a target organization's identifier to gain unauthorized access and complete administrative control over all organizational data. The vulnerability directly violates core security principles of least privilege and proper access control enforcement, creating a pathway for data exfiltration and modification of sensitive information. This represents a classic case of insufficient authorization checking that allows privilege escalation through predictable identifier enumeration attacks.
The technical implementation of this flaw demonstrates a fundamental failure in the authentication and authorization architecture. When users attempt to join an organization, the system should verify their legitimate credentials and permissions before granting access. However, the current implementation bypasses these critical checks, allowing any attacker with knowledge of a valid organization ID to assume membership privileges. This vulnerability operates at the boundary between user authentication and organizational access control, where proper session management and access token validation should occur. The flaw enables attackers to perform unauthorized data operations including read, write, and modification activities across all organizational resources without proper authorization.
The operational impact of this vulnerability extends far beyond simple unauthorized access, creating substantial risk to data integrity, confidentiality, and availability. Organizations may experience complete data compromise where attackers can view, alter, or delete sensitive information without detection. The vulnerability enables persistent access that could remain undetected for extended periods, allowing attackers to conduct reconnaissance, data exfiltration, and destructive operations. This flaw particularly affects multi-tenant systems where proper isolation between organizations is critical, potentially enabling cross-tenant data leakage and unauthorized resource access. The risk is compounded by the fact that attackers need only discover a valid organization identifier, which may be obtained through various reconnaissance methods including public information gathering or enumeration attacks.
Mitigation strategies should focus on implementing robust access control mechanisms that enforce proper authentication before granting organizational privileges. Organizations must implement mandatory user verification processes that validate credentials and permissions before membership is granted. This includes implementing proper session management with time-based expiration and activity monitoring to detect anomalous access patterns. The system should enforce strong identifier validation and implement rate limiting to prevent enumeration attacks. Additionally, implementing role-based access controls with proper privilege separation and audit logging will help detect unauthorized activities. This vulnerability aligns with CWE-285 which addresses improper authorization in access control systems and maps to ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting. Regular security testing including penetration testing and access control reviews should be conducted to identify and remediate similar authorization flaws in the system architecture.