1. Ubuntu Security Notices
  2. USN-5720-1

USN-5720-1: Zstandard vulnerabilities

Publication date

9 November 2022

Overview

Zstandard could be made to expose sensitive information

Releases

Packages

  • libzstd - fast lossless compression algorithm

Details

It was discovered that Zstandard was not properly managing file
permissions when generating output files. A local attacker could
possibly use this issue to cause a race condition and gain
unauthorized access to sensitive data.

It was discovered that Zstandard was not properly managing file
permissions when generating output files. A local attacker could
possibly use this issue to cause a race condition and gain
unauthorized access to sensitive data.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
16.04 xenial zstd –  1.3.1+dfsg-1~ubuntu0.16.04.1+esm3  
libzstd1 –  1.3.1+dfsg-1~ubuntu0.16.04.1+esm3  

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References

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