Heap Buffer Overflow Vulnerability in Assimp Package
Summary
OSV-2026-1077: Heap-buffer-overflow in std::__1::basic_string. Affects assimp versions >= 16c50d7b53b5b6536599135004fb003c5e6f88b8. No fix is published. How to fix ↓
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Background
Assimp (Open Asset Import Library) is a powerful library designed for importing various 3D model formats into applications. It provides a unified interface for developers to work with 3D assets, making it easier to integrate complex models into graphics applications. However, like many libraries, Assimp is susceptible to vulnerabilities that can compromise the integrity and security of applications using it. This specific vulnerability involves a heap buffer overflow, which can lead to unexpected behavior or crashes in applications that rely on the affected version of Assimp.
Vulnerability Detail
The vulnerability identified as OSV-2026-1077 is a heap buffer overflow that occurs in the Assimp library, specifically within the XFileParser component. This issue arises when the parser attempts to read beyond the allocated memory buffer, potentially leading to crashes or arbitrary code execution. The vulnerability was reported through OSS-Fuzz, highlighting its critical nature and the need for immediate attention. The affected code paths include Assimp::XFileParser::GetNextToken and Assimp::XFileParser::ParseDataObjectTemplate, which are responsible for parsing data objects in the X file format. If exploited, this vulnerability could allow an attacker to manipulate the behavior of applications using the library, leading to severe security implications.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can implement input validation and sanitization to ensure that the data being processed by the Assimp library does not exceed expected limits. This may involve checking the size of the input data before passing it to the Assimp functions to prevent buffer overflows.
Conclusion
The heap buffer overflow vulnerability in the Assimp package poses significant risks to applications utilizing this library. By understanding the nature of the vulnerability and following the recommended steps to update the package, developers can protect their applications from potential exploits. Utilizing tools like Vulert can further enhance security by providing real-time monitoring and alerts for open-source vulnerabilities.
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FAQ
A heap buffer overflow occurs when a program writes more data to a buffer located on the heap than it can hold, leading to memory corruption and potential security vulnerabilities.
You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in your software. By simply uploading your manifest file like package-lock.json, you can check for vulnerabilities without needing to access the code directly.
Exploiting this vulnerability could lead to application crashes, data corruption, or even arbitrary code execution, allowing attackers to take control of the affected system.
Yes, updating to the latest version of Assimp that includes the patch for this vulnerability is the best way to ensure safety. Always check the official repository for the most recent updates.
Yes, you can use the Vulert playground at Vulert Scanner to test your application for vulnerabilities without requiring any signup.
References
Related vulnerabilities
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