CVE-2024-4146 in lunary
Summary
by MITRE • 06/08/2024
In lunary-ai/lunary version v1.2.13, an improper authorization vulnerability exists that allows unauthorized users to access and manipulate projects within an organization they should not have access to. Specifically, the vulnerability is located in the `checkProjectAccess` method within the authorization middleware, which fails to adequately verify if a user has the correct permissions to access a specific project. Instead, it only checks if the user is part of the organization owning the project, overlooking the necessary check against the `account_project` table for explicit project access rights. This flaw enables attackers to gain complete control over all resources within a project, including the ability to create, update, read, and delete any resource, compromising the privacy and security of sensitive information.
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Analysis
by VulDB Data Team • 07/19/2024
The vulnerability identified as CVE-2024-4146 resides within the lunary-ai/lunary platform version v1.2.13 and represents a critical improper authorization flaw that undermines the system's access control mechanisms. This weakness specifically targets the authorization middleware component responsible for validating user permissions before granting access to organizational projects. The vulnerability stems from a fundamental design flaw in the `checkProjectAccess` method which fails to implement comprehensive permission verification, creating a pathway for unauthorized individuals to bypass normal access controls and gain illicit access to project resources.
The technical implementation of this vulnerability manifests in the authorization middleware where the system performs only a superficial check to determine if a user belongs to the organization that owns a particular project. This approach is fundamentally flawed as it assumes that organizational membership automatically grants project-level access, ignoring the principle of least privilege that should govern resource access. The middleware fails to cross-reference the user's credentials against the `account_project` table which contains explicit project access rights and permissions. This omission creates a scenario where attackers can exploit the system by simply authenticating as any member of an organization, regardless of whether they have been explicitly granted access to specific projects.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as it provides attackers with complete administrative control over compromised projects. Once an attacker successfully exploits this vulnerability, they can perform all possible operations within the affected project including creating new resources, modifying existing data, reading sensitive information, and deleting critical components. This comprehensive access capability transforms what should be a controlled environment with granular permissions into a potential attack vector for data exfiltration, system manipulation, and unauthorized resource consumption. The vulnerability essentially eliminates the distinction between different project access levels, treating all organization members as having unlimited access to all projects within that organization.
This vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems, and represents a clear violation of the principle that access controls should be enforced at multiple levels of granularity. From an ATT&CK framework perspective, this flaw maps to techniques such as privilege escalation and credential access, as it allows attackers to elevate their privileges from basic organization membership to full project administrator rights. The vulnerability also demonstrates characteristics of TTPs related to lateral movement and persistence within compromised environments, as attackers can establish long-term access to sensitive project data and resources. Organizations implementing this software are particularly vulnerable to insider threats and external attacks that exploit this authorization gap, potentially leading to significant data breaches and operational disruptions.
The recommended mitigations for this vulnerability involve implementing proper authorization checks that enforce explicit project access rights rather than relying on organizational membership alone. The system must be updated to validate user permissions against the `account_project` table before granting access to any project resources, ensuring that only users with explicit project-level permissions can access specific project data. Additionally, implementing role-based access controls with proper permission auditing and logging mechanisms will help detect and prevent unauthorized access attempts. Regular security assessments and penetration testing should be conducted to identify similar authorization flaws in other components of the system, while implementing proper input validation and access control logging will provide better visibility into potential exploitation attempts. The fix should also include comprehensive testing to ensure that the authorization checks work correctly across all project access scenarios and that no legitimate users are inadvertently blocked from accessing their authorized projects.