CVE-2019-18332 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 gain access to directory listings of the server by sending specifically crafted packets to 80/tcp, 8095/tcp or 8080/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-2019-18332 affects the SPPA-T3000 Application Server, a critical component in industrial automation and control systems. This vulnerability represents a directory traversal issue that exposes sensitive server information to unauthorized network actors. The affected service operates on multiple TCP ports including 80/tcp, 8095/tcp, and 8080/tcp, making it accessible to attackers who can establish network connectivity to the target system. The vulnerability stems from insufficient input validation and improper access controls within the application server's web interface implementation. According to CWE-22, this vulnerability maps to directory traversal flaws that allow attackers to access files and directories outside the intended scope of the application. The security implications extend beyond simple information disclosure as this exposure can reveal system structure, potentially enabling more sophisticated attacks.
The technical exploitation of this vulnerability requires an attacker to send specifically crafted network packets to the designated ports where the SPPA-T3000 Application Server is listening. This attack vector falls under the ATT&CK technique T1083 for discovering system information and T1190 for exploitation of remote services. The vulnerability does not require authentication for exploitation, making it particularly dangerous in environments where the application server is exposed to untrusted networks. The lack of public exploitation evidence at the time of advisory publication does not diminish the severity of the issue, as such vulnerabilities often serve as initial access points for more comprehensive attacks. The vulnerability's impact is amplified in industrial control systems where the SPPA-T3000 is deployed, as these systems often handle critical infrastructure operations and may lack the robust security controls found in traditional enterprise environments.
The operational impact of this vulnerability extends beyond immediate information disclosure to potentially compromise entire industrial control system architectures. An attacker who successfully exploits this vulnerability could gain insights into the server's directory structure, file names, and potentially sensitive configuration information that could be used for further attacks. This exposure creates opportunities for attackers to map the server's file system, identify potentially vulnerable components, and plan more sophisticated exploitation attempts. The vulnerability's presence on commonly used web ports makes it particularly attractive to threat actors who may be scanning for industrial control system components. Organizations operating SPPA-T3000 servers should consider this vulnerability as part of a broader attack surface assessment, particularly in environments where these systems are not properly segmented from corporate networks. The vulnerability's existence highlights the need for proper network segmentation and access controls in industrial environments, as described in the NIST Cybersecurity Framework and ISO/IEC 27001 standards.
Mitigation strategies for CVE-2019-18332 should include immediate network segmentation to isolate affected SPPA-T3000 servers from untrusted networks, implementing proper firewall rules to restrict access to the vulnerable ports, and applying vendor-provided patches or updates. Organizations should also conduct comprehensive vulnerability assessments to identify other potentially exposed industrial control systems and implement network monitoring to detect suspicious traffic patterns. The vulnerability demonstrates the importance of maintaining current security practices for industrial control systems and aligns with the principle of least privilege as outlined in the MITRE ATT&CK framework. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in industrial environments, as these systems often remain exposed to network threats due to legacy considerations and operational requirements that prioritize system availability over security controls.