Heap Buffer Overflow Vulnerability in Assimp Package
Summary
OSV-2026-1035: Heap-buffer-overflow in Assimp::D3MF::D3MFExporter::writeFaces. Affects assimp versions >= 16c50d7b53b5b6536599135004fb003c5e6f88b8. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
Assimp (Open Asset Import Library) is a powerful library designed for importing and exporting various 3D model formats. It provides a unified interface for developers to work with 3D assets, making it easier to integrate 3D models into applications. However, like many libraries, Assimp is susceptible to vulnerabilities that can compromise the integrity and security of applications that rely on it. The specific vulnerability in question is a heap buffer overflow that can occur during the export process of D3MF files, potentially leading to crashes or exploitation.
Vulnerability Detail
The vulnerability identified as OSV-2026-1035 is a heap-buffer-overflow that occurs in the Assimp::D3MF::D3MFExporter::writeFaces function. This issue was reported through OSS-Fuzz, highlighting a crash type of heap-buffer-overflow READ 4. The vulnerability can be triggered when the library attempts to write mesh data to a D3MF file, leading to potential crashes or exploitation of the application using the library. The affected code paths include writeFaces, writeMesh, and writeObjects functions, which are critical for the proper functioning of the D3MF export feature.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, you can avoid using the D3MF export functionality until the package is updated. Additionally, consider implementing input validation and sanitization to mitigate potential exploitation risks while using the affected functions.
Conclusion
The heap buffer overflow vulnerability in the Assimp package poses a significant risk to applications that utilize its D3MF export functionality. It is crucial for developers to update to the latest patched version of the library and consider implementing workarounds until the update is applied. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for assimp →
FAQ
A heap buffer overflow occurs when a program writes more data to a buffer located on the heap than it can hold, potentially overwriting adjacent memory and leading to crashes or security vulnerabilities.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By simply using a manifest file like package-lock.json, you can check for vulnerabilities without needing to access the code.
The consequences can range from application crashes to potential exploitation by attackers, who may leverage the overflow to execute arbitrary code or gain unauthorized access.
Yes, it is important to check the official Assimp repository for the latest version that addresses this vulnerability. Always ensure you are using the most recent stable release.
Yes, Vulert allows you to monitor your application for vulnerabilities in real-time using just a manifest file. You can check your application against known vulnerabilities without any signup required.
References
Related vulnerabilities
Recent vulnerabilities recorded for assimp.
