Ubuntu alert USN-5593-1 (libzstd)

From:
             
 
Paulo Flabiano Smorigo <pfsmorigo@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-5593-1] Zstandard vulnerability
Date:
             
 
Fri, 02 Sep 2022 11:17:09 -0300
Message-ID:
             
 
<20220902141709.5hs7wseno7bfuuui@morty>
==========================================================================
Ubuntu Security Notice USN-5593-1
September 01, 2022

libzstd vulnerability
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Zstandard could be made to execute arbitrary code if it received specially
crafted input.

Software Description:
- libzstd: fast lossless compression algorithm

Details:

It was discovered that Zstandard incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.

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+esm2
  zstd                            1.3.1+dfsg-1~ubuntu0.16.04.1+esm2

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

References:
  https://ubuntu.com/security/notices/USN-5593-1
  CVE-2019-11922