Ubuntu alert USN-4108-1 (libzstd)

From:
             
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4108-1] Zstandard vulnerability 
Date:
             
 
Wed, 21 Aug 2019 12:16:05 -0300
Message-ID:
             
 
<20190821151604.GA15128@blu3l41n>
==========================================================================
Ubuntu Security Notice USN-4108-1
August 21, 2019

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

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

- Ubuntu 18.04 LTS

Summary:

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

Software Description:
- libzstd: fast lossless compression algorithm -- development files

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 18.04 LTS:
  libzstd1                        1.3.3+dfsg-2ubuntu1.1
  zstd                            1.3.3+dfsg-2ubuntu1.1

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

References:
  https://usn.ubuntu.com/4108-1
  CVE-2019-11922

Package Information:
  https://launchpad.net/ubuntu/+source/libzstd/1.3.3+dfsg-2...
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