CVE-2024-20722 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 read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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-2024-20722 affects Substance3D Painter versions 9.1.1 and earlier, representing a critical out-of-bounds read flaw that exposes sensitive memory contents to unauthorized parties. This vulnerability resides within the file processing mechanisms of the software, specifically when handling maliciously crafted files that trigger memory access violations beyond allocated boundaries. The flaw manifests during normal file operations when the application attempts to read data from memory locations that have not been properly validated or initialized, creating potential entry points for attackers seeking to extract confidential information from the application's memory space.
The technical implementation of this vulnerability stems from inadequate bounds checking within the file parsing routines of Substance3D Painter, which fails to properly validate input data structures before accessing memory regions. When a malicious file is processed, the application's memory management system encounters unexpected data patterns that cause it to read beyond the intended buffer boundaries, potentially exposing sensitive information such as stack canaries, heap metadata, or other confidential data residing in adjacent memory locations. This memory disclosure represents a significant security risk as it provides attackers with information that could be leveraged to circumvent modern exploit mitigations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it specifically enables attackers to bypass critical security mechanisms such as Address Space Layout Randomization. By obtaining memory addresses and layout information through the out-of-bounds read, adversaries can more effectively craft targeted exploits that defeat ASLR protections. This capability significantly reduces the complexity of subsequent exploitation attempts, as attackers no longer need to perform additional reconnaissance to determine memory layouts. The vulnerability requires user interaction for exploitation, meaning victims must open the malicious file, but once executed, the memory disclosure can be leveraged to develop more sophisticated attacks.
From a cybersecurity perspective, this vulnerability aligns with CWE-129, which addresses improper validation of array indices and other bounds checking issues that can lead to out-of-bounds memory access. The flaw also relates to ATT&CK technique T1059, where adversaries may use information disclosure to gain knowledge about system memory structures, and T1068, which involves exploiting vulnerabilities to gain elevated privileges. The attack surface is particularly concerning given that Substance3D Painter is widely used in professional digital content creation environments where users frequently handle files from various sources. Organizations should consider implementing strict file validation policies and limiting user interaction with untrusted files, while also applying immediate patches to affected versions to prevent exploitation attempts.
Mitigation strategies should prioritize the immediate upgrade to patched versions of Substance3D Painter, as this represents the most effective defense against the vulnerability. Security teams should also implement network-based controls to filter potentially malicious files and establish monitoring procedures to detect unusual file processing activities. Additionally, organizations should consider deploying application whitelisting solutions to restrict execution of unauthorized software versions and maintain comprehensive incident response procedures to address potential exploitation attempts. The vulnerability demonstrates the critical importance of maintaining up-to-date software and implementing defense-in-depth strategies to protect against memory corruption vulnerabilities that can undermine fundamental security protections.