CVE-2024-20744 in Substance 3D Painter
Summary
by MITRE • 02/15/2024
Substance3D - Painter versions 9.1.1 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 • 03/06/2024
The vulnerability identified as CVE-2024-20744 affects Substance3D Painter versions 9.1.1 and earlier, representing a critical out-of-bounds write flaw that can be exploited to achieve arbitrary code execution. This vulnerability resides within the file parsing functionality of the software, specifically when processing maliciously crafted files that contain malformed data structures. The flaw allows an attacker to manipulate memory layout during file processing, potentially leading to memory corruption that can be leveraged for privilege escalation or full system compromise. The vulnerability is classified as a CWE-787 Out-of-bounds Write according to the Common Weakness Enumeration catalog, which specifically addresses improper bounds checking in array or buffer operations. The attack vector requires user interaction, making it a targeted exploit where victims must willingly open the malicious file, typically through social engineering or phishing campaigns. This dependency on user action aligns with ATT&CK technique T1204.002 User Execution: Malicious File, which describes how adversaries use malicious files to execute code on target systems. The software's failure to properly validate input data during file parsing creates a pathway for attackers to inject malicious data that overflows allocated buffers, potentially overwriting adjacent memory regions including function pointers or return addresses.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a significant threat to user security and system integrity within creative software environments. Substance3D Painter is widely used in professional digital content creation workflows, making it an attractive target for attackers seeking to compromise creative professionals or organizations. The out-of-bounds write vulnerability can potentially be exploited to bypass modern security mitigations such as address space layout randomization and data execution prevention, especially when the software runs with elevated privileges or when users have administrative rights. Attackers can craft specially formatted files that trigger the vulnerable code path during normal file loading operations, making the exploitation process relatively straightforward once a victim interacts with the malicious file. The vulnerability's severity is compounded by the fact that it operates within a legitimate software application, making it harder to detect through traditional security monitoring approaches. The exploitability of this vulnerability is further enhanced by the fact that many creative professionals regularly open files from various sources, including third-party assets, collaborative projects, or downloaded content, increasing the attack surface.
Mitigation strategies for CVE-2024-20744 should focus on both immediate remediation and long-term security hardening measures. The most effective immediate solution is upgrading to Substance3D Painter version 9.1.2 or later, which contains the necessary patches to address the out-of-bounds write vulnerability. Organizations should implement strict software update policies to ensure all users maintain current versions of creative applications, particularly those handling sensitive or external content. Security awareness training should emphasize the importance of verifying file sources and avoiding suspicious file attachments, as the vulnerability requires user interaction to be exploited. Network-based security controls such as email filtering, web proxies, and application whitelisting can help prevent users from inadvertently opening malicious files. The vulnerability also highlights the importance of input validation and bounds checking in software development practices, as recommended by the OWASP Secure Coding Practices and the CERT Secure Coding Standards. Organizations should consider implementing sandboxing mechanisms for file processing operations, particularly when handling files from untrusted sources. Additionally, monitoring for unusual file processing activities or memory access patterns could help detect exploitation attempts. The ATT&CK framework suggests implementing defensive measures such as process injection detection and monitoring for suspicious memory modifications to identify potential exploitation attempts. Regular security assessments of creative software environments should include vulnerability scanning and penetration testing to identify similar issues in other applications used within the organization.