CVE-2023-41321 in GLPI
Summary
by MITRE • 09/27/2023
GLPI stands for Gestionnaire Libre de Parc Informatique is a Free Asset and IT Management Software package, that provides ITIL Service Desk features, licenses tracking and software auditing. An API user can enumerate sensitive fields values on resources on which he has read access. Users are advised to upgrade to version 10.0.10. There are no known workarounds for this vulnerability.
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Analysis
by VulDB Data Team • 10/19/2023
The vulnerability identified as CVE-2023-41321 affects GLPI version 10.0.9 and earlier, representing a significant information disclosure weakness that undermines the software's access control mechanisms. This issue specifically targets the API functionality of GLPI, which serves as a critical interface for managing IT assets and service desk operations. The vulnerability allows authenticated API users to enumerate sensitive field values from resources they have read access to, creating an unintended data exposure pathway that could compromise the confidentiality of organizational information. The affected system operates under the assumption that users with read permissions should only access publicly available data, but this flaw enables enumeration of fields that should remain restricted.
The technical implementation flaw stems from insufficient input validation and access control enforcement within GLPI's API response handling mechanisms. When API users make requests to retrieve resource information, the system fails to properly filter sensitive fields based on user permissions, resulting in the exposure of additional data beyond what is typically accessible through standard read operations. This vulnerability operates at the application layer and specifically impacts the API endpoints responsible for resource enumeration and retrieval. The flaw represents a classic case of improper access control as classified under CWE-284, where the system fails to properly enforce authorization checks on resource access. The vulnerability is particularly concerning because it does not require elevated privileges or complex attack vectors, making it accessible to any authenticated user with read access to the system.
The operational impact of this vulnerability extends beyond simple data exposure, potentially enabling adversaries to conduct reconnaissance activities and gather intelligence about organizational IT assets and configurations. Attackers could leverage this information to identify potential targets for further exploitation, understand system architecture, or plan more sophisticated attacks against the organization's IT infrastructure. The exposure of sensitive field values could include license information, software auditing data, or other proprietary details that would normally be restricted to authorized personnel only. This vulnerability directly violates the principle of least privilege and could lead to information leakage that affects compliance with various regulatory frameworks and industry standards. Organizations relying on GLPI for IT asset management and service desk operations face increased risk of data breaches and potential regulatory violations.
Mitigation strategies should prioritize immediate upgrade to GLPI version 10.0.10 or later, as recommended by the vendor, which contains the necessary patches to address the access control implementation flaw. Organizations should also implement additional monitoring and logging of API activities to detect potential exploitation attempts, particularly around resource enumeration requests. Network segmentation and API access controls should be reviewed to limit unnecessary exposure of the GLPI API to untrusted networks. Security teams should conduct thorough access reviews to ensure that only authorized users have read permissions where sensitive data is concerned. The vulnerability demonstrates the importance of proper input validation and access control implementation, aligning with ATT&CK technique T1213.002 for Data from Information Repositories and T1566.001 for Phishing. Organizations should also consider implementing automated security scanning tools to identify similar access control issues in other applications within their IT environment, as this vulnerability type often indicates broader architectural weaknesses in permission management systems.