1. Ubuntu Security Notices
  2. USN-4760-1

USN-4760-1: libzstd vulnerabilities

Publication date

8 March 2021

Overview

libzstd could be made to expose sensitive information.

Releases

Packages

  • libzstd - fast lossless compression algorithm

Details

It was discovered that libzstd incorrectly handled file permissions. A
local attacker could possibly use this issue to access certain files,
contrary to expectations.

It was discovered that libzstd incorrectly handled file permissions. A
local attacker could possibly use this issue to access certain files,
contrary to expectations.

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
20.10 groovy libzstd1 –  1.4.5+dfsg-4ubuntu0.1
zstd –  1.4.5+dfsg-4ubuntu0.1
20.04 focal libzstd1 –  1.4.4+dfsg-3ubuntu0.1
zstd –  1.4.4+dfsg-3ubuntu0.1
18.04 bionic libzstd1 –  1.3.3+dfsg-2ubuntu1.2
zstd –  1.3.3+dfsg-2ubuntu1.2

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References

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