Buffer Over-read Vulnerability in libsndfile: CVE-2018-19662
Summary
ALPINE-CVE-2018-19662: An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2alaw_array in alaw.c that will lead to a denial of service. Affects libsndfile versions < 1.0.28-r6. Fixed in 1.0.28-r6. 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 handle audio data efficiently. However, like many libraries, it can be susceptible to vulnerabilities that may compromise the integrity and availability of applications that rely on it. The specific vulnerability identified as CVE-2018-19662 affects versions of libsndfile prior to 1.0.28-r6, where a buffer over-read can occur, leading to potential denial of service.
Vulnerability Detail
An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2alaw_array in alaw.c that can lead to a denial of service. This vulnerability arises from improper handling of audio data, which can allow an attacker to exploit the library's functionality, potentially crashing the application or causing unexpected behavior. The CVSS score for this vulnerability is 8.1, indicating a high severity level.
How To Fix
Minimum fixed version
1.0.28-r6
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 an immediate update is not feasible, consider implementing input validation to ensure that audio data processed by libsndfile does not trigger the buffer over-read. This may involve sanitizing inputs or limiting the size of audio files that can be processed.
Conclusion
The buffer over-read vulnerability in libsndfile, identified as CVE-2018-19662, poses a significant risk to applications using this library. It is crucial to update to the patched version 1.0.28-r6 to mitigate the risks associated with this vulnerability. Regular monitoring and timely updates are essential to maintain application security.
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FAQ
CVE-2018-19662 is a vulnerability in the libsndfile library that allows for a buffer over-read, potentially leading to denial of service.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Exploiting this vulnerability can lead to application crashes or unexpected behavior, impacting the availability of services that rely on libsndfile.
Yes, the patched version of libsndfile is 1.0.28-r6. Updating to this version will resolve the vulnerability.
The CVSS score for CVE-2018-19662 is 8.1, indicating a high severity level.
References
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