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Vulnerability of Python: executing DLL code via python3.dll

Synthesis of the vulnerability 

An attacker can create a malicious python3.dll DLL, and then put it in the current directory of Python, in order to execute code.
Impacted systems: Fedora, Python, RHEL.
Severity of this alert: 2/4.
Creation date: 06/07/2020.
Références of this alert: 29778, CVE-2020-15523, FEDORA-2020-16167a66a2, FEDORA-2020-4cf7c3910b, RHSA-2020:2823-01, VIGILANCE-VUL-32711.

Description of the vulnerability 

An attacker can create a malicious python3.dll DLL, and then put it in the current directory of Python, in order to execute code.
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This vulnerability announce impacts software or systems such as Fedora, Python, RHEL.

Our Vigil@nce team determined that the severity of this cybersecurity threat is medium.

The trust level is of type confirmed by the editor, with an origin of intranet server.

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

Solutions for this threat 

Python: version 3.8.4.
The version 3.8.4 is fixed:
  https://www.python.org/

Python: version 3.7.9.
The version 3.7.9 is fixed:
  https://www.python.org/

Python: version 3.6.12.
The version 3.6.12 is fixed:
  https://www.python.org/

Fedora 31-32: new python35 packages.
New packages are available:
  Fedora 31: python35 3.5.10-1.fc31
  Fedora 32: python35 3.5.10-1.fc32

Python: version 3.5.10.
The version 3.5.10 is fixed:
  https://www.python.org/downloads/release/python-3510/

Python: patch for python3.dll.
A patch is available:
  https://github.com/python/cpython/pull/21297

RHEL 8.1: new nghttp2 packages.
New packages are available:
  RHEL 8.1: nghttp2 1.33.0-3.el8_1.1
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