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Vulnerability of Exim: code execution via Sort Expansion Operator

Synthesis of the vulnerability 

An attacker can use a vulnerability via Sort Expansion Operator of Exim, in order to run code.
Impacted systems: Debian, Exim, SLES, Ubuntu.
Severity of this alert: 4/4.
Creation date: 22/07/2019.
Revision date: 25/07/2019.
Références of this alert: CERTFR-2019-AVI-360, CVE-2019-13917, DSA-4488-1, openSUSE-SU-2021:0753-1, USN-4075-1, VIGILANCE-VUL-29849.

Description of the vulnerability 

An attacker can use a vulnerability via Sort Expansion Operator of Exim, in order to run code.
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This vulnerability note impacts software or systems such as Debian, Exim, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is critical.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Exim: version 4.92.1.
The version 4.92.1 is fixed:
  https://www.exim.org/mirrors.html

cPanel WHM: version 11.86.0.33.
The version 11.86.0.33 is fixed:
  https://www.cpanel.net/

cPanel WHM: version 11.90.0.18.
The version 11.90.0.18 is fixed:
  https://www.cpanel.net/

Debian 9/10: new exim4 packages.
New packages are available:
  Debian 9: exim4 4.89-2+deb9u5
  Debian 10: exim4 4.92-8+deb10u1

SUSE LE 15 SP1: new exim packages.
New packages are available:
  SUSE LE 15 SP1: exim 4.94.2-bp151.2.4.1

Ubuntu: new exim4 packages.
New packages are available:
  Ubuntu 19.04: exim4-daemon-heavy 4.92-4ubuntu1.2, exim4-daemon-light 4.92-4ubuntu1.2
  Ubuntu 18.04 LTS: exim4-daemon-heavy 4.90.1-1ubuntu1.3, exim4-daemon-light 4.90.1-1ubuntu1.3
  Ubuntu 16.04 LTS: exim4-daemon-heavy 4.86.2-2ubuntu2.4, exim4-daemon-light 4.86.2-2ubuntu2.4
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