Critical Vulnerability in tinyobjloader Package: Improper Array Index Validation
Summary
UBUNTU-CVE-2020-28589: An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. Affects tinyobjloader versions 2.0.0~rc5+dfsg1-4build1 – 2.0.0~rc5+dfsg1-5build1. No fix is published. How to fix ↓
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Background
tinyobjloader is a lightweight C++ library designed for loading 3D models in the OBJ format. It is widely used in graphics applications for its simplicity and efficiency. However, the library has been found to have a critical vulnerability that affects its LoadObj functionality, which can lead to severe security risks if exploited.
Vulnerability Detail
An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and development commit 79d4421. This flaw allows an attacker to craft a malicious file that, when processed by the library, could lead to code execution on the host system. The vulnerability has a CVSS score of 9.6, indicating a critical severity level, and poses significant risks including unauthorized access and potential system compromise.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, avoid processing untrusted or unknown OBJ files with tinyobjloader until the package is updated. Implement strict validation of input files to prevent potential exploitation.
Conclusion
The tinyobjloader package has a critical vulnerability that can lead to code execution through improper array index validation. It is crucial for users to update to the latest patched version to protect their systems from potential exploitation. Implementing workarounds and using tools like Vulert can help monitor and mitigate risks associated with this vulnerability.
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FAQ
tinyobjloader is a C++ library used for loading 3D models in the OBJ format, commonly utilized in graphics applications.
The vulnerability involves improper array index validation, allowing attackers to execute arbitrary code by providing specially crafted OBJ files.
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The CVSS score of this vulnerability is 9.6, indicating a critical severity level.
If an immediate update is not possible, avoid using tinyobjloader with untrusted files and implement input validation as a temporary measure.
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