CVE-2019-25610 in Titan ENUM DNS NP
Summary
by MITRE • 03/22/2026
NetNumber Titan Master 7.9.1 contains a path traversal vulnerability in the drp endpoint that allows authenticated users to download arbitrary files by injecting directory traversal sequences. Attackers can manipulate the path parameter with base64-encoded payloads containing ../ sequences to bypass authorization and retrieve sensitive system files like /etc/shadow.
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Analysis
by VulDB Data Team • 03/22/2026
The vulnerability identified as CVE-2019-25610 affects NetNumber Titan Master version 7.9.1 and represents a critical path traversal flaw within the drp endpoint. This security weakness stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file path manipulation attempts. The vulnerability specifically targets the handling of the path parameter within the drp endpoint, which processes requests for file operations without sufficient authorization checks or path normalization. Attackers exploiting this vulnerability can leverage base64-encoded payloads containing directory traversal sequences to access files outside the intended directory structure. The flaw operates at the application layer and specifically aligns with CWE-22, which defines path traversal vulnerabilities as weaknesses that allow attackers to access files and directories outside the intended scope through manipulation of file path parameters. This vulnerability is particularly dangerous because it requires only authenticated access, meaning that any user with valid credentials can potentially exploit the flaw to gain unauthorized access to sensitive system information.
The technical implementation of this vulnerability involves the manipulation of the path parameter through base64-encoded strings that contain ../ sequences designed to traverse up the directory tree. When the application processes these malformed requests, it fails to properly validate or sanitize the input, allowing the traversal sequences to be interpreted as legitimate path navigation commands. The impact is significant as attackers can bypass normal authorization mechanisms and directly access critical system files such as /etc/shadow, which contains password hash information for system users. This type of attack falls under the ATT&CK technique T1005, which describes data from local system collection, and demonstrates how path traversal vulnerabilities can be leveraged to extract sensitive information from target systems. The vulnerability essentially allows an attacker to perform arbitrary file read operations, potentially exposing not only password files but also configuration files, database files, and other sensitive data that might be stored on the system.
The operational impact of CVE-2019-25610 extends beyond simple information disclosure, as it represents a fundamental flaw in the application's security architecture that could enable further exploitation. Once an attacker successfully retrieves sensitive files like /etc/shadow, they can potentially use this information for credential harvesting, account compromise, or as a stepping stone for additional attacks within the network. The vulnerability is particularly concerning in enterprise environments where NetNumber Titan Master systems are deployed, as these applications often serve as critical infrastructure components that manage network operations and user access. Organizations running affected versions of the software face significant risk of unauthorized access to sensitive operational data, which could lead to service disruption, compliance violations, and potential regulatory penalties. The vulnerability also demonstrates poor input validation practices that could be indicative of broader security weaknesses within the application's codebase, potentially exposing other attack vectors that could be exploited by sophisticated adversaries.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected systems with the vendor-provided security updates. Organizations should implement strict input validation and sanitization measures that normalize all file path parameters and reject any requests containing directory traversal sequences regardless of encoding method. Network segmentation and access controls should be enforced to limit the scope of potential exploitation, ensuring that only authorized personnel have access to the affected endpoint. The implementation of web application firewalls and intrusion detection systems can help detect and prevent exploitation attempts by monitoring for suspicious path traversal patterns. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities within the application's codebase, particularly focusing on file operation handling and input validation mechanisms. Organizations should also consider implementing principle of least privilege access controls and monitoring for unusual file access patterns that might indicate exploitation attempts. The vulnerability serves as a reminder of the critical importance of proper input validation and the potential consequences of inadequate security controls in network management applications.