Heap-Buffer Overflow Vulnerability in OpenJPEG Package
Summary
ALPINE-CVE-2020-27814: A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. Affects openjpeg versions < 2.3.1-r5. Fixed in 2.3.1-r5. How to fix ↓
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Background
OpenJPEG is an open-source library that provides a comprehensive implementation of the JPEG 2000 image coding system. It is widely used for image processing and manipulation in various applications. The library supports encoding and decoding of JPEG 2000 images, making it a critical component for software that handles image data. However, OpenJPEG has been found to have a vulnerability that could lead to severe security issues if exploited.
Vulnerability Detail
A heap-buffer overflow was discovered in OpenJPEG, specifically in the way it processes certain PNG format files. This vulnerability allows an attacker to craft a malicious PNG file that, when processed by an application using OpenJPEG, could lead to an application crash or, in some cases, the execution of arbitrary code with the permissions of the user running the application. The vulnerability is classified with a CVSS score of 7.8, indicating a high severity level.
How To Fix
Minimum fixed version
2.3.1-r5
This is the first release that contains the fix.
sudo apk add --upgrade openjpegTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not possible, consider avoiding the processing of untrusted PNG files until the vulnerability is resolved. Additionally, ensure that applications using OpenJPEG are run with the least privileges necessary to limit potential damage in case of an exploit.
Conclusion
The heap-buffer overflow vulnerability in the OpenJPEG package poses a significant risk to applications that process PNG files. It is crucial for users to update to the patched versions to safeguard against potential exploits. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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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 was allocated for, potentially leading to memory corruption and security vulnerabilities.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By uploading your manifest file, such as package-lock.json, you can check for vulnerabilities without needing to install any software.
Exploiting this vulnerability can lead to application crashes or arbitrary code execution, which could compromise the security of the system running the affected application.
Yes, you can mitigate the risk by avoiding the processing of untrusted PNG files and running applications with limited permissions.
Detailed information about this vulnerability can be found in the CVE-2020-27814 report and on the official OpenJPEG repository.
References
Related vulnerabilities
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