CVE-2023-34263 in FvDesigner
Summary
by MITRE • 05/03/2024
Fatek Automation FvDesigner FPJ File Parsing Uninitialized Pointer Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fatek Automation FvDesigner. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of FPJ files. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18162.
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Analysis
by VulDB Data Team • 03/14/2025
The CVE-2023-34263 vulnerability represents a critical remote code execution flaw in Fatek Automation FvDesigner software, specifically within its FPJ file parsing functionality. This vulnerability stems from improper memory management practices where a pointer variable is accessed without proper initialization before use. The flaw exists in the software's file processing mechanism that handles Fatek's proprietary FPJ (Fatek Project Journal) files, which are commonly used for automation project development and configuration within industrial control systems. Attackers can exploit this vulnerability by crafting malicious FPJ files or hosting them on compromised websites that users might inadvertently access. The vulnerability's classification as a remote code execution issue means that attackers do not require physical access to the target system, making it particularly dangerous in industrial environments where automation systems are often connected to corporate networks. This type of vulnerability is particularly concerning in operational technology (OT) environments where system integrity and availability are paramount for industrial processes.
The technical root cause of this vulnerability aligns with CWE-457: Use of Uninitialized Variable, which is a well-documented weakness in software development practices that leads to unpredictable behavior when uninitialized variables are accessed. In the context of this vulnerability, the uninitialized pointer creates a memory access violation that can be manipulated by attackers to redirect program execution flow. When the FvDesigner application processes a malicious FPJ file, the uninitialized pointer may contain arbitrary memory addresses that, when dereferenced, allow attackers to inject and execute malicious code within the application's memory space. This memory corruption vulnerability operates at the application level, potentially enabling attackers to execute arbitrary commands with the privileges of the FvDesigner process, which typically runs with elevated permissions in industrial automation contexts. The vulnerability's exploitation requires user interaction through either opening a malicious file or visiting a malicious webpage hosting the crafted FPJ content, making it a client-side attack vector that leverages social engineering techniques.
The operational impact of CVE-2023-34263 extends beyond simple code execution, as it represents a significant threat to industrial control system security and operational continuity. In industrial environments where Fatek Automation products are deployed, this vulnerability could enable attackers to compromise critical manufacturing processes, disrupt production workflows, or gain unauthorized access to sensitive operational data. The vulnerability's remote exploitation capability means that attackers can target systems from external networks without requiring physical presence, making it particularly dangerous for organizations that maintain industrial systems connected to the internet. The attack surface is broadened by the fact that these applications are often used in environments with limited security monitoring and patching capabilities, especially in legacy industrial systems where regular updates may not be feasible. This vulnerability can be leveraged as part of broader attack campaigns targeting industrial control systems, potentially enabling lateral movement within networks and access to other critical infrastructure components.
Organizations affected by this vulnerability should implement immediate mitigations including restricting user access to potentially malicious file types, implementing network segmentation to isolate industrial automation systems, and deploying application whitelisting solutions to prevent unauthorized execution of malicious FPJ files. The recommended approach involves disabling automatic execution of FPJ files from untrusted sources and implementing strict file validation procedures before processing any project files. Security teams should also consider deploying intrusion detection systems that can monitor for suspicious file access patterns and network traffic associated with exploitation attempts. The vulnerability's classification under the ATT&CK framework would likely map to techniques involving execution through file downloads and command and control communications, making network-based monitoring and threat hunting activities essential for detection. Organizations should prioritize patching efforts and maintain updated threat intelligence feeds to identify potential exploitation attempts, while also implementing user education programs to reduce the risk of social engineering attacks that leverage this vulnerability. Regular security assessments of industrial control systems should include evaluation of third-party software dependencies and their associated vulnerabilities to prevent similar issues from compromising operational technology environments.