CVE-2024-1741 in lunary
Summary
by MITRE • 04/10/2024
lunary-ai/lunary version 1.0.1 is vulnerable to improper authorization, allowing removed members to read, create, modify, and delete prompt templates using an old authorization token. Despite being removed from an organization, these members can still perform operations on prompt templates by sending HTTP requests with their previously captured authorization token. This issue exposes organizations to unauthorized access and manipulation of sensitive template data.
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Analysis
by VulDB Data Team • 01/10/2025
The vulnerability identified as CVE-2024-1741 affects lunary-ai/lunary version 1.0.1 and represents a critical authorization flaw that undermines the security model of the application. This issue stems from improper session management where the system fails to invalidate authorization tokens upon user removal from an organization. The flaw allows former members to maintain access to organizational resources through previously captured tokens, creating a persistent security risk that persists beyond the natural lifecycle of user permissions. The vulnerability manifests when removed users attempt to perform operations on prompt templates using their old authorization token, effectively bypassing the intended access controls that should have been enforced upon their removal.
The technical implementation of this vulnerability demonstrates a failure in the authorization enforcement mechanism, specifically in the token validation process. When users are removed from an organization, the system should invalidate their existing tokens and prevent any further access to organization-specific resources. However, the current implementation does not properly check the user's current membership status during token validation, allowing revoked access to persist. This behavior creates a scenario where authentication tokens become perpetually valid regardless of the user's current authorization status within the organization. The flaw operates at the application layer where HTTP requests are processed without proper authorization state verification, making it particularly dangerous as it can be exploited through standard network communication channels.
The operational impact of CVE-2024-1741 extends beyond simple unauthorized access to encompass potential data integrity violations and information disclosure risks. Former members with access to prompt templates can read, create, modify, and delete sensitive template data, which may contain proprietary information, system configurations, or business-critical prompts. This unauthorized manipulation capability allows attackers to potentially disrupt operations, inject malicious content into templates, or exfiltrate sensitive organizational data. The vulnerability is particularly concerning because it operates silently without requiring additional authentication factors or complex attack vectors, making it easily exploitable by individuals who have previously had legitimate access to the system.
Organizations implementing this software are exposed to significant risk of insider threats and credential compromise scenarios. The vulnerability creates a persistent backdoor that remains active until the system is updated or the tokens are manually invalidated, which may not occur promptly after user removal. Security practitioners should consider this issue in the context of the CWE-668 weakness category, which specifically addresses "Exposure of Resource to Wrong Sphere," and the ATT&CK technique T1531 for "Modify Existing Service" as attackers could leverage this to maintain persistence. The vulnerability also aligns with the principle of least privilege violations, where users maintain access beyond their authorized period. Effective mitigations include implementing immediate token invalidation upon user removal, implementing robust session management protocols, and establishing automated processes for token revocation. Organizations should also consider implementing additional monitoring for template access patterns and establishing more frequent token rotation policies to minimize the window of opportunity for exploitation.