Critical Buffer Overflow Vulnerability in libsndfile: CVE-2018-13139
Summary
ALPINE-CVE-2018-13139: A stack-based buffer overflow in psf_memset in common.c in libsndfile 1.0.28 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted audio file. Affects libsndfile versions < 1.0.28-r4. Fixed in 1.0.28-r4. How to fix ↓
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Background
libsndfile is a widely used library for reading and writing audio files in various formats. It provides a simple API for developers to manipulate audio data, making it a crucial component in many audio processing applications. The library supports multiple audio formats and is known for its efficiency and reliability. However, a critical vulnerability has been identified in version 1.0.28, which exposes applications using this library to potential attacks.
Vulnerability Detail
A stack-based buffer overflow in the psf_memset function within common.c of libsndfile version 1.0.28 allows remote attackers to exploit this vulnerability by crafting malicious audio files. This can lead to a denial of service (application crash) or potentially other unspecified impacts. The vulnerability can be triggered by the executable sndfile-deinterleave, which processes audio files. The CVSS score for this vulnerability is 8.8, indicating a high severity level.
How To Fix
Minimum fixed version
1.0.28-r4
This is the first release that contains the fix.
sudo apk add --upgrade libsndfileTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If updating the package is not immediately feasible, consider implementing input validation to reject any audio files that do not conform to expected formats. This can help mitigate the risk of exploitation until the package is updated.
Conclusion
The vulnerability CVE-2018-13139 in libsndfile poses a significant risk to applications that rely on this library for audio processing. It is crucial to update to the patched version 1.0.28-r4 to mitigate the risk of exploitation. Additionally, using tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2018-13139 is a critical vulnerability in the libsndfile library that allows for a stack-based buffer overflow, potentially leading to application crashes or other impacts.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
The CVSS score for this vulnerability is 8.8, indicating a high severity level.
Implement input validation to reject any non-conforming audio files as a temporary workaround until you can update the package.
You can find more information about libsndfile and its functionalities on its official documentation page or repository.
References
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