CVE-2024-47071 in OSS Endpoint Manager
Summary
by MITRE • 10/01/2024
OSS Endpoint Manager is an endpoint manager module for FreePBX. OSS Endpoint Manager module activation can allow authenticated web users unauthorized access to read system files with the permissions of the webserver process. This vulnerability is fixed in 14.0.4.
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Analysis
by VulDB Data Team • 10/02/2024
The CVE-2024-47071 vulnerability affects the OSS Endpoint Manager module within the FreePBX platform, representing a critical privilege escalation and information disclosure flaw. This module serves as an endpoint management solution for telephony systems, making it a prime target for attackers seeking to compromise voice communication infrastructures. The vulnerability stems from inadequate input validation and access control mechanisms within the module's web interface, allowing authenticated users to exploit a path traversal vulnerability that bypasses normal security boundaries.
The technical implementation of this flaw involves the module's failure to properly sanitize user-supplied input when processing file access requests. When an authenticated user interacts with the OSS Endpoint Manager interface, the system does not adequately validate or restrict file path parameters, enabling attackers to manipulate these inputs to traverse the file system hierarchy. This weakness directly maps to CWE-22 Path Traversal and CWE-79 Cross-Site Scripting vulnerabilities, where insufficient input validation creates opportunities for unauthorized file access. The vulnerability specifically allows attackers to read arbitrary system files that are typically protected from direct web access, potentially exposing sensitive configuration data, authentication credentials, or system information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it creates a pathway for further exploitation within the compromised system. Attackers with access to the OSS Endpoint Manager module can potentially read system files containing database credentials, configuration parameters, or other sensitive data that could be used to escalate privileges or gain deeper access to the underlying FreePBX platform. This vulnerability particularly affects organizations relying on FreePBX for their telephony infrastructure, as it provides a direct route to compromise the entire communication system. The attack vector requires only authenticated access to the web interface, making it accessible to users who have legitimate access to the system but may not be authorized to perform such actions, thus creating an insider threat scenario.
Organizations should immediately upgrade to version 14.0.4 of the OSS Endpoint Manager module to remediate this vulnerability, as this release includes proper input validation and access control measures that prevent unauthorized file access. System administrators should also implement additional monitoring for unusual file access patterns and conduct thorough access reviews to ensure that only authorized personnel have access to the endpoint management functionality. Network segmentation and least privilege principles should be enforced to limit the potential impact of such vulnerabilities, while regular security audits of web applications should include checks for similar path traversal vulnerabilities. This vulnerability demonstrates the critical importance of input validation in web applications and aligns with ATT&CK technique T1078 Valid Accounts and T1566 Phishing to highlight how authenticated access can be leveraged for privilege escalation and information gathering activities.