CVE-2024-5507 in KeyShot Viewer
Summary
by MITRE • 06/06/2024
Luxion KeyShot Viewer KSP File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Luxion KeyShot Viewer. 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 KSP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22266.
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Analysis
by VulDB Data Team • 03/26/2025
The CVE-2024-5507 vulnerability represents a critical stack-based buffer overflow in Luxion KeyShot Viewer's KSP file parsing functionality, classified under CWE-121 as improper restriction of operations within the buffer. This vulnerability resides in the viewer's handling of KSP (KeyShot Project) files, which are commonly used for 3D rendering and visualization workflows. The flaw occurs when the application processes maliciously crafted KSP files without adequate input validation, specifically failing to verify the length of user-supplied data before copying it to a fixed-size stack buffer. This fundamental oversight creates a predictable exploitation vector that can be leveraged by remote attackers to achieve arbitrary code execution within the context of the currently running process. The vulnerability's classification as a remote code execution flaw means that attackers can potentially compromise systems without requiring local access, making it particularly dangerous in enterprise environments where users may inadvertently encounter malicious content.
The technical exploitation of this vulnerability requires a sophisticated attack chain that begins with delivery of a malicious KSP file through social engineering or compromised websites. The attack vector is classified under ATT&CK technique T1203 as Exploitation for Client Execution, where attackers leverage application vulnerabilities to execute code on target systems. When a user opens the malicious file, the KeyShot Viewer application attempts to parse the KSP structure, triggering the buffer overflow condition that overwrites adjacent stack memory locations. This memory corruption can be manipulated to redirect program execution flow, allowing attackers to inject and execute malicious code with the privileges of the KeyShot Viewer process. The stack-based nature of the vulnerability means that attackers can potentially overwrite return addresses, saved registers, and other critical execution context information, providing multiple pathways for code execution control.
The operational impact of CVE-2024-5507 extends beyond simple remote code execution, as it represents a significant threat to 3D design and visualization work environments where KeyShot Viewer is extensively used. Organizations utilizing this software for product design, architectural visualization, or marketing presentations face potential compromise when users access untrusted content, whether through email attachments, web downloads, or collaborative platforms. The vulnerability's requirement for user interaction makes it particularly challenging to defend against, as it cannot be exploited through automated scanning alone but requires social engineering or targeted delivery of malicious files. This makes the attack surface more complex and potentially more persistent in environments where users regularly handle external design files or collaborate with third parties. The exploitation can lead to complete system compromise, data exfiltration, or establishment of persistent backdoors within the target environment.
Mitigation strategies for CVE-2024-5507 should focus on both immediate defensive measures and long-term architectural improvements to prevent exploitation. Organizations should prioritize applying vendor patches as soon as they become available, as this vulnerability has been actively exploited in the wild and represents a high-priority threat. Network segmentation and content filtering can help reduce exposure by preventing access to potentially malicious KSP files from untrusted sources. Implementing application whitelisting policies that restrict execution of KeyShot Viewer only from trusted locations and ensuring users are trained to recognize social engineering attempts can significantly reduce the attack surface. Additionally, deploying intrusion detection systems that monitor for suspicious file access patterns or unusual network behavior related to KeyShot Viewer usage can provide early warning of potential exploitation attempts. Security teams should also consider implementing sandboxing techniques for handling untrusted design files and establishing strict protocols for validating external content before opening it in production environments. The vulnerability demonstrates the importance of proper input validation and memory safety practices in software development, aligning with industry standards that emphasize defensive programming techniques to prevent buffer overflow conditions.