Critical Array Index Validation Flaw in FFmpeg Package
Summary
UBUNTU-CVE-2024-31581: FFmpeg version n6.1 was discovered to contain an improper validation of array index vulnerability in libavcodec/cbs_h266_syntax_template.c. Affects ffmpeg versions < 7:7.1.1-1ubuntu1.1. Fixed in 7:7.1.1-1ubuntu1.1. How to fix ↓
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Background
FFmpeg is a widely-used open-source software suite for handling multimedia data, including audio and video processing. It provides libraries and tools for encoding, decoding, transcoding, muxing, demuxing, streaming, filtering, and playing various multimedia formats. The package is essential for developers and users who require robust multimedia solutions. However, a critical vulnerability has been identified in FFmpeg version n6.1, which could potentially lead to severe consequences if exploited.
Vulnerability Detail
The vulnerability arises from improper validation of array indices in the file libavcodec/cbs_h266_syntax_template.c. This flaw allows attackers to manipulate the application, leading to undefined behavior, which could result in crashes, data corruption, or arbitrary code execution. The vulnerability has a CVSS score of 9.8, indicating its critical nature and the potential for significant impact on affected systems.
How To Fix
Minimum fixed version
7:7.1.1-1ubuntu1.1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade ffmpegTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using the affected features of FFmpeg until the package is updated. However, the best course of action is to apply the patch as soon as possible.
Conclusion
The identified vulnerability in FFmpeg poses a significant risk due to its potential for causing undefined behavior and system compromise. Users are strongly advised to update to the patched version to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.
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FAQ
The vulnerability is an improper validation of array index, which can lead to undefined behavior within the application.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
The CVSS score of this vulnerability is 9.8, indicating a critical level of severity.
Yes, a patch is available in the updated version 7:7.1.1-1ubuntu1.1 of the FFmpeg package.
If immediate updates are not possible, avoid using the affected features of FFmpeg until the patch can be applied.
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