Integer Overflow Vulnerability in libebml: Buffer Overflow Risk
Summary
DEBIAN-CVE-2023-52339: In libebml before 1.4.5, an integer overflow in MemIOCallback.cpp can occur when reading or writing. It may result in buffer overflows. Affects libebml versions < 1.4.2-1+deb11u1. Fixed in 1.4.2-1+deb11u1. How to fix ↓
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Background
libebml is a library used for reading and writing EBML (Extensible Binary Meta Language) files, which are commonly used in multimedia applications. It provides essential functionalities for handling metadata in video and audio files. However, prior to version 1.4.5, libebml was susceptible to an integer overflow vulnerability that could lead to buffer overflows, potentially compromising the integrity and security of applications relying on this library.
Vulnerability Detail
In libebml versions before 1.4.5, an integer overflow can occur in the MemIOCallback.cpp file during read or write operations. This vulnerability can lead to buffer overflows, which may allow attackers to execute arbitrary code, crash applications, or corrupt data. The issue arises from improper handling of memory allocation based on user input, making it critical for developers to address this flaw promptly.
How To Fix
Minimum fixed version
1.4.2-1+deb11u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libebmlTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider restricting the input size for read and write operations to prevent potential overflow scenarios. However, this is not a substitute for applying the patch.
Conclusion
The integer overflow vulnerability in libebml poses significant risks to applications utilizing this library. It is crucial for developers to update to the latest patched versions to mitigate these risks. Utilizing tools like Vulert can help monitor and identify vulnerabilities in your software effectively.
See every vulnerability recorded for libebml →
FAQ
The vulnerability is an integer overflow that can lead to buffer overflows during read or write operations.
Exploiting this vulnerability may allow attackers to execute arbitrary code, crash applications, or corrupt data.
Versions of libebml prior to 1.4.5 are affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.
If immediate updates are not possible, implement input size restrictions as a temporary workaround until you can apply the patch.
References
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