Heap Buffer Overflow Vulnerability in VLC Media Player
Summary
OSV-2025-900: Heap-buffer-overflow in DecodeFrame. Affects vlc versions >= f8e9d090fc20452cfddb91df28bf235eb59baff1, < 1558850135d43cf8fe5a500f31d9250410ee6359. Fixed in 1558850135d43cf8fe5a500f31d9250410ee6359. How to fix ↓
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Background
VLC Media Player is a widely-used open-source multimedia player that supports various audio and video formats. It is known for its versatility, user-friendly interface, and ability to play files from local storage as well as streaming protocols. However, like many software applications, VLC is susceptible to vulnerabilities that can compromise its functionality and security.
Vulnerability Detail
The vulnerability identified as a heap buffer overflow in the DecodeFrame function can lead to potential crashes or arbitrary code execution. This issue was reported through OSS-Fuzz, indicating that it can be exploited when processing certain media files. The crash state reveals that the overflow occurs during the decoding process, which can be triggered by specially crafted input, making it a significant risk for users who play untrusted media files.
How To Fix
Minimum fixed version
1558850135d43cf8fe5a500f31d9250410ee6359
This is the first release that contains the fix.
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Workaround
As a temporary workaround, users are advised to avoid playing untrusted media files that could exploit this vulnerability until the software is updated. Additionally, users can consider using alternative media players that are not affected by this issue.
Conclusion
The heap buffer overflow vulnerability in VLC Media Player poses a significant risk to users, particularly when handling untrusted media files. It is crucial to update to the latest patched version to mitigate this risk. Users can also utilize Vulert to monitor their applications for 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 can hold, potentially leading to memory corruption and security vulnerabilities.
You can check your VLC version by going to the 'Help' menu and selecting 'About'. If your version is older than the patched version, it is recommended to update.
Not updating VLC can expose your system to potential crashes and security risks, especially when playing untrusted media files that could exploit the vulnerability.
Yes, Vulert can monitor your software for open-source vulnerabilities in real-time using just a manifest file like package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground.
More information can be found in the OSS-Fuzz report linked in the vulnerability details, which provides insights into the nature of the issue and its impact.
References
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