CVE-2018-2026 in Financial Transaction Manager
Summary
by MITRE
IBM Financial Transaction Manager 3.2.1 for Digital Payments could allow an authenticated user to obtain a directory listing of internal product files. IBM X-Force ID: 155552.
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Analysis
by VulDB Data Team • 07/03/2023
IBM Financial Transaction Manager version 3.2.1 for Digital Payments contains a directory traversal vulnerability that enables authenticated users to access internal product files through improper input validation. This flaw resides in the application's handling of file path parameters, where insufficient sanitization allows maliciously crafted requests to traverse directory structures and enumerate sensitive internal directories. The vulnerability stems from inadequate validation of user-supplied input in file access mechanisms, creating an information disclosure risk that could expose system internals to unauthorized parties.
The technical implementation of this vulnerability involves the application's failure to properly validate and sanitize file path parameters before processing user requests. When authenticated users submit requests containing specially crafted directory traversal sequences, the system processes these inputs without adequate filtering, allowing access to files outside the intended directory structure. This represents a classic directory traversal flaw classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The vulnerability operates at the application layer where file system access controls are bypassed through manipulated input parameters, potentially exposing configuration files, source code, or other sensitive artifacts.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with insights into the internal architecture and file structure of the financial transaction management system. An authenticated attacker could leverage this weakness to discover sensitive files such as configuration settings, database connection parameters, or application source code that might reveal additional attack vectors. The exposure of internal file structures could facilitate more sophisticated attacks including privilege escalation, data exfiltration, or the identification of other vulnerabilities within the system. This weakness particularly affects financial institutions where the disclosure of internal system information could compromise security posture and regulatory compliance requirements.
Organizations should implement multiple layers of defense to mitigate this vulnerability including input validation controls, proper file access restrictions, and regular security assessments of financial transaction systems. The implementation of secure coding practices should enforce strict validation of all user inputs, particularly those used in file access operations, while maintaining proper access controls to limit file system exposure. Additionally, network segmentation and monitoring solutions should be deployed to detect anomalous file access patterns that might indicate exploitation attempts. This vulnerability aligns with attack patterns documented in the MITRE ATT&CK framework under the information gathering phase, where adversaries seek to understand system internals before executing more targeted attacks. Regular patch management and security updates should be prioritized to ensure that known vulnerabilities in financial transaction processing systems are promptly addressed, as this particular weakness could enable broader compromise of the financial transaction infrastructure.