Ubuntu 5720-1: Zstandard vulnerabilities | LinuxSecurity.com
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Ubuntu Security Notice USN-5720-1
November 09, 2022

libzstd vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

Zstandard could be made to expose sensitive information

Software Description:
- 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.

Update instructions:

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

Ubuntu 16.04 ESM:
   libzstd1 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3
   zstd 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3

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

References:
   https://ubuntu.com/security/notices/USN-5720-1
   CVE-2021-24031, CVE-2021-24032

Ubuntu 5720-1: Zstandard vulnerabilities

November 9, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: Zstandard could be made to expose sensitive information Software Description: - 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.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM:   libzstd1 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3   zstd 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3 In general, a standard system update will make all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-5720-1

  CVE-2021-24031, CVE-2021-24032

Severity
Ubuntu Security Notice USN-5720-1

Package Information

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