Critical Memory Write Vulnerability in libvorbis Affects Multiple Alpine Versions
Summary
ALPINE-CVE-2018-5146: An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest. Affects libvorbis versions < 1.3.6-r0. Fixed in 1.3.6-r0. How to fix ↓
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Background
libvorbis is an open-source software library used for encoding and decoding audio data in the Vorbis format. It is widely utilized in various applications, including media players and streaming services, due to its efficient compression and high-quality audio output. However, libvorbis has been identified to have a critical vulnerability that can lead to severe security risks, particularly in versions prior to 1.3.6-r0 across multiple Alpine Linux distributions.
Vulnerability Detail
An out of bounds memory write vulnerability was reported during the Pwn2Own contest, affecting libvorbis. This vulnerability allows attackers to manipulate memory, potentially leading to arbitrary code execution, data corruption, or crashes. The issue specifically impacts versions of Firefox and Thunderbird that utilize libvorbis for audio processing, making it a significant concern for users of these applications. The vulnerability has a CVSS score of 8.8, indicating its high severity and potential for exploitation.
How To Fix
Minimum fixed version
1.3.6-r0
This is the first release that contains the fix.
sudo apk add --upgrade libvorbisTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users may consider disabling the use of libvorbis in applications that rely on it until the package can be updated. However, this may affect audio playback functionality.
Conclusion
The libvorbis vulnerability presents a significant risk to users of Alpine Linux and associated applications. It is crucial to update to the patched version to mitigate potential security threats. Users are encouraged to monitor their systems and utilize tools like Vulert for real-time vulnerability alerts.
See every vulnerability recorded for libvorbis →
FAQ
The vulnerability is an out of bounds memory write that can lead to arbitrary code execution or crashes in applications using libvorbis.
All versions of Alpine Linux prior to 1.3.6-r0 for the libvorbis package are affected by this vulnerability.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If an immediate update is not possible, consider disabling the use of libvorbis in your applications as a temporary workaround.
The CVSS score of this vulnerability is 8.8, indicating a high severity level.
References
Related vulnerabilities
Recent vulnerabilities recorded for libvorbis.
