CVE-2019-18322 in SPPA-T3000 MS3000 Migration Server
Summary
by MITRE
A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 Server could be able to read and write arbitrary files on the local file system by sending specifically crafted packets to port 5010/tcp. This vulnerability is independent from CVE-2019-18321. Please note that an attacker needs to have network access to the MS3000 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-2019-18322 affects the SPPA-T3000 MS3000 Migration Server, a critical component in industrial automation systems used for process control and monitoring. This device serves as a migration server facilitating data transfer between different versions of the SPPA-T3000 system, which is widely deployed in critical infrastructure environments including power generation, oil and gas, and manufacturing facilities. The vulnerability resides in the server's handling of network communications on port 5010/tcp, which is designated for migration server operations. The affected system represents a significant risk to operational technology environments where network segmentation may be inadequate or non-existent, potentially exposing critical industrial control systems to unauthorized access.
The technical flaw manifests as a lack of proper input validation and access control within the migration server's network protocol implementation. An attacker capable of sending specifically crafted packets to the designated TCP port 5010 can exploit this vulnerability to perform arbitrary read and write operations on the local file system. This represents a classic privilege escalation vulnerability where network-level access translates into local system compromise, bypassing traditional network security controls. The vulnerability's exploitation does not require authentication credentials, making it particularly dangerous in environments where network access to industrial systems is not adequately restricted. The flaw essentially allows an attacker to manipulate the server's file system directly, potentially enabling them to modify critical system files, install malicious software, or exfiltrate sensitive operational data.
The operational impact of this vulnerability extends beyond simple data compromise, as it can lead to complete system compromise and potential operational disruption in critical infrastructure environments. Industrial control systems relying on SPPA-T3000 migration servers may experience unauthorized modifications to configuration files, operational parameters, or even firmware components, potentially leading to process failures, safety incidents, or production downtime. The vulnerability's independence from CVE-2019-18321 indicates that attackers can exploit both issues simultaneously, amplifying the potential impact. Given that no public exploitation was known at the time of advisory publication, the vulnerability likely remained undetected in many environments, creating a window for potential attackers to establish persistent access or cause operational damage.
Organizations should implement immediate network segmentation to isolate the MS3000 Migration Server from general network access, restricting communication to only authorized systems and personnel. Network access control lists should be configured to block external access to port 5010/tcp, while internal access should be strictly limited to trusted networks and authenticated users. The affected vendor should be consulted for security patches or firmware updates specifically addressing this vulnerability, as the issue likely requires a software fix rather than network-level mitigation alone. System monitoring should be enhanced to detect unusual file access patterns or network traffic to port 5010, implementing intrusion detection systems that can identify the specific packet structures associated with this vulnerability. This vulnerability aligns with CWE-20, "Improper Input Validation," and maps to ATT&CK technique T1071.004, "Application Layer Protocol: DNS," and T1059.001, "Command and Scripting Interpreter: PowerShell," as attackers may leverage this vulnerability to establish persistent access and execute malicious commands within the system. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in industrial control system components, as these environments often contain legacy systems with known security weaknesses that can serve as entry points for attackers.