CVE-2025-21132 in Substance3D
Summary
by MITRE • 01/14/2025
Substance3D - Stager versions 3.0.4 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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Analysis
by VulDB Data Team • 02/12/2025
The vulnerability identified as CVE-2025-21132 affects Substance3D Stager versions 3.0.4 and earlier, representing a critical out-of-bounds write flaw that poses significant security risks to affected systems. This vulnerability resides within the stager component of the Substance3D software suite, which serves as a deployment and initialization mechanism for various 3D content creation and rendering tools. The out-of-bounds write condition occurs when the application processes maliciously crafted input files, specifically designed to trigger memory corruption during file parsing operations. This type of vulnerability falls under the Common Weakness Enumeration category CWE-787, which specifically addresses out-of-bounds write conditions that can lead to arbitrary code execution.
The technical exploitation of this vulnerability requires specific user interaction, making it a targeted attack vector that cannot be automatically triggered through network-based means alone. Attackers must successfully convince a victim to open a specially crafted malicious file that contains malformed data structures designed to exploit the memory corruption flaw. When the vulnerable stager component attempts to process this malicious input, it writes data beyond the bounds of allocated memory regions, potentially overwriting critical program structures or executable code. This memory corruption can be leveraged by attackers to inject and execute arbitrary code within the security context of the currently logged-in user, effectively bypassing standard user permission boundaries and potentially escalating privileges.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a significant threat to enterprise security environments where Substance3D tools are commonly deployed for 3D content creation and design workflows. The requirement for user interaction reduces the attack surface compared to fully autonomous exploits but still poses substantial risk in environments where users may encounter malicious files through email attachments, file sharing platforms, or compromised websites. Organizations utilizing Substance3D software across their design teams, animation studios, or product development departments face potential exposure through social engineering campaigns or targeted attacks aimed at specific user groups. The vulnerability affects not only individual workstations but also collaborative environments where shared project files might contain malicious payloads, creating cascading security risks across entire teams or organizations.
Mitigation strategies for CVE-2025-21132 should prioritize immediate software updates to versions 3.0.5 or later, which contain patches addressing the out-of-bounds write condition. System administrators should implement comprehensive user education programs to raise awareness about the risks of opening untrusted files, particularly those received through email or downloaded from unknown sources. Network security controls including email filtering, web proxies, and file integrity monitoring should be enhanced to detect and prevent the delivery of malicious files to vulnerable systems. The vulnerability aligns with ATT&CK technique T1204.002, which covers "User Execution: Malicious File," highlighting the importance of both technical controls and user awareness in defending against this attack vector. Organizations should also consider implementing application whitelisting policies that restrict execution of unauthorized software, particularly for creative applications that process external files. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify and remediate similar memory corruption vulnerabilities in other software components within the organization's attack surface.