CVE-2019-18335 in SPPA-T3000 Application Server
Summary
by MITRE
A vulnerability has been identified in SPPA-T3000 Application Server (All versions). An attacker with network access to the Application Server could be able to gain access to logs and configuration files by sending specifically crafted packets to 80/tcp. Please note that an attacker needs to have network access to the Application Server in order to exploit this vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.
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Analysis
by VulDB Data Team • 03/11/2024
The vulnerability identified as CVE-2019-18335 affects the SPPA-T3000 Application Server, a critical component in industrial automation environments that serves as a centralized platform for managing and monitoring industrial processes. This application server operates within operational technology (OT) ecosystems where it handles sensitive operational data and configuration parameters essential for industrial control systems. The vulnerability specifically resides in the server's handling of network requests on port 80, which is commonly used for HTTP communication and serves as a primary access point for system administration and monitoring functions.
The technical flaw manifests as an insufficient input validation mechanism that fails to properly sanitize or authenticate incoming network requests. When an attacker sends specifically crafted packets to the designated TCP port 80, the application server processes these malformed requests without adequate protection measures, allowing unauthorized access to sensitive system files including logs and configuration data. This represents a classic path traversal or information disclosure vulnerability where the server's response to malformed input reveals internal system information that should remain protected. The vulnerability operates at the application layer and demonstrates a lack of proper access controls and input sanitization mechanisms.
The operational impact of this vulnerability extends beyond simple information disclosure as it provides attackers with potentially sensitive operational data that could be used for further exploitation. Access to system logs may reveal operational procedures, user credentials, system configurations, and other sensitive information that could be leveraged for more sophisticated attacks. Configuration files often contain critical system parameters, network settings, and operational procedures that could enable attackers to understand the system architecture and identify additional attack vectors. This vulnerability particularly threatens industrial environments where the SPPA-T3000 serves as a central control point for critical infrastructure operations.
Security professionals should note that this vulnerability aligns with CWE-20, which addresses "Improper Input Validation," and represents a clear example of how insufficient validation can lead to information disclosure. The attack vector requires network access to the target system, placing this vulnerability in the category of remote attacks that can be executed without physical access to the industrial control environment. From an ATT&CK framework perspective, this vulnerability maps to techniques involving reconnaissance and credential access through information gathering, potentially enabling lateral movement within the industrial network. Organizations should implement network segmentation to isolate critical OT environments from general network access, deploy intrusion detection systems to monitor for suspicious traffic patterns on port 80, and ensure that all application servers are properly patched and updated. The vulnerability underscores the importance of implementing defense-in-depth strategies specifically tailored for industrial control systems where the consequences of information disclosure can extend beyond traditional cybersecurity impacts to potentially compromise operational safety and business continuity.