CVE-2019-13544 in TPEditor
Summary
by MITRE
Delta Electronics TPEditor, Versions 1.94 and prior. Multiple out-of-bounds write vulnerabilities may be exploited by processing specially crafted project files, which may allow remote code execution.
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Analysis
by VulDB Data Team • 12/19/2023
The vulnerability identified as CVE-2019-13544 affects Delta Electronics TPEditor software versions 1.94 and earlier, representing a critical security flaw that could enable remote code execution through crafted project files. This vulnerability resides within the project file processing functionality of the software, where improper input validation and memory management practices create opportunities for attackers to inject malicious code. The affected system operates within industrial control environments where TPEditor is commonly deployed for programming and configuration tasks, making it a significant concern for operational technology infrastructure.
The technical implementation of this vulnerability manifests as multiple out-of-bounds write conditions that occur when the software processes specially crafted project files. These memory corruption issues arise from inadequate bounds checking during file parsing operations, allowing attackers to overwrite adjacent memory locations with malicious data. The flaw specifically impacts how the application handles project file structures, particularly when processing malformed or specially constructed input data that exceeds expected buffer sizes. This type of vulnerability is categorized under CWE-121, which addresses stack-based buffer overflow conditions, and CWE-787, which covers out-of-bounds write vulnerabilities in heap-based memory structures. The vulnerability's exploitation potential is amplified by the fact that it can be triggered through remote file processing, eliminating the need for physical access to the target system.
The operational impact of CVE-2019-13544 extends beyond simple code execution, as it could enable attackers to gain full control over affected systems within industrial environments. The remote code execution capability allows threat actors to deploy malicious payloads, establish persistence mechanisms, and potentially escalate privileges within the operational technology ecosystem. Industrial control systems that rely on Delta Electronics TPEditor for configuration and programming are particularly vulnerable, as these environments often lack traditional security controls found in enterprise networks. The vulnerability's exploitation could result in significant disruptions to critical infrastructure operations, including potential safety hazards in industrial processes where automated control systems are essential for proper functioning.
Mitigation strategies for this vulnerability require immediate attention from system administrators and cybersecurity teams responsible for industrial control environments. The primary recommendation involves upgrading to Delta Electronics TPEditor versions 1.95 or later, which contain patches addressing the out-of-bounds write conditions. Organizations should also implement network segmentation to isolate systems running TPEditor from critical operational networks, reducing the attack surface for potential exploitation. Additional defensive measures include implementing strict file validation procedures for project files, monitoring for unusual file processing activities, and maintaining comprehensive network traffic analysis to detect potential exploitation attempts. The vulnerability's characteristics align with attack patterns documented in the attack mitigation framework, particularly those targeting industrial control systems and operational technology environments. Security teams should also consider implementing application whitelisting policies to prevent execution of unauthorized code and establish incident response procedures specifically designed for industrial control system vulnerabilities.