CVE-2022-39802 in Manufacturing Execution
Summary
by MITRE • 10/12/2022
SAP Manufacturing Execution - versions 15.1, 15.2, 15.3, allows an attacker to exploit insufficient validation of a file path request parameter. The intended file path can be manipulated to allow arbitrary traversal of directories on the remote server. The file content within each directory can be read which may lead to information disclosure.
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Analysis
by VulDB Data Team • 11/06/2022
SAP Manufacturing Execution systems version 15.1 through 15.3 contain a critical directory traversal vulnerability that stems from inadequate validation of file path request parameters. This weakness enables attackers to manipulate file path inputs and navigate through the server's directory structure beyond the intended boundaries. The vulnerability resides in the application's handling of user-supplied path data, where proper input sanitization and validation mechanisms are absent or insufficiently implemented. According to CWE-22, this represents a classic path traversal flaw that allows attackers to access files outside the designated directory, potentially exposing sensitive system resources and confidential data. The attack vector typically involves manipulating URL parameters or file path variables to include directory traversal sequences such as ../ or ..\ that bypass normal access controls.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with unauthorized access to critical system files and potentially sensitive manufacturing data. Attackers can exploit this weakness to read configuration files, database connection details, application source code, and other confidential information stored within the server's file system. This exposure can lead to further exploitation opportunities including privilege escalation, data theft, and system compromise. The vulnerability affects the core functionality of SAP Manufacturing Execution systems, which are critical for production processes and typically contain proprietary manufacturing data, process parameters, and operational instructions that are essential for business continuity. Organizations utilizing these systems face significant risk of intellectual property theft and operational disruption when this vulnerability is exploited.
Security professionals should implement multiple layers of defense to mitigate this vulnerability. The primary mitigation involves implementing strict input validation and sanitization for all file path parameters, ensuring that user-supplied input cannot contain directory traversal sequences. Organizations should also deploy proper access controls and implement the principle of least privilege, limiting the application's file system access to only necessary directories. Network segmentation and firewall rules can help restrict access to vulnerable endpoints, while regular security audits and penetration testing can identify similar vulnerabilities in other system components. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachments) as attackers may use this weakness to discover sensitive files and potentially deliver malicious payloads. Additionally, implementing web application firewalls and input validation controls can provide additional protection against such attacks, while regular patch management ensures that known vulnerabilities are addressed promptly.