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Vulnerability of Python: denial of service via Lib/ipaddress.py Hash Collision

Synthesis of the vulnerability 

An attacker can trigger a fatal error via Lib/ipaddress.py Hash Collision of Python, in order to trigger a denial of service.
Vulnerable systems: Debian, Fedora, openSUSE Leap, Solaris, Python, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 2/4.
Creation date: 19/06/2020.
Références of this weakness: bulletinoct2020, CVE-2020-14422, DLA-2280-1, FEDORA-2020-16167a66a2, FEDORA-2020-1ddd5273d6, FEDORA-2020-4cf7c3910b, FEDORA-2020-705c6ea5be, FEDORA-2020-87c0a0a52d, FEDORA-2020-b513391ca8, FEDORA-2020-d30881c970, FEDORA-2020-d808fdd597, FEDORA-2020-dfb11916cc, FEDORA-2020-efb908b6a8, openSUSE-SU-2020:0931-1, openSUSE-SU-2020:0940-1, openSUSE-SU-2020:0989-1, openSUSE-SU-2020:1002-1, RHSA-2020:4285-01, RHSA-2020:4299-01, RHSA-2020:4433-01, RHSA-2020:4641-01, RHSA-2020:5010-01, SUSE-SU-2020:1822-1, SUSE-SU-2020:2157-1, SUSE-SU-2020:2216-1, SUSE-SU-2020:2699-1, SUSE-SU-2020:3563-1, USN-4428-1, VIGILANCE-VUL-32588.

Description of the vulnerability 

An attacker can trigger a fatal error via Lib/ipaddress.py Hash Collision of Python, in order to trigger a denial of service.
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This weakness alert impacts software or systems such as Debian, Fedora, openSUSE Leap, Solaris, Python, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

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 security bulletin.

Solutions for this threat 

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 Lib/ipaddress.py Hash Collision.
A patch is available:
  https://github.com/python/cpython/pull/20956

Debian 9: new python3.5 packages.
New packages are available:
  Debian 9: python3.5 3.5.3-1+deb9u2

Fedora 31-32: new python39 packages.
New packages are available:
  Fedora 31: python39 3.9.0~b4-1.fc31
  Fedora 32: python39 3.9.0~b4-1.fc32

Fedora 31: new python36 packages.
New packages are available:
  Fedora 31: python36 3.6.11-3.fc31

Fedora 31: new python3 packages.
New packages are available:
  Fedora 31: python3 3.7.8-2.fc31

Fedora 32: new mingw-python3 packages.
New packages are available:
  Fedora 32: mingw-python3 3.8.3-3.fc32

Fedora 32: new python34 packages.
New packages are available:
  Fedora 32: python34 3.4.10-11.fc32

Fedora 32: new python36 packages.
New packages are available:
  Fedora 32: python36 3.6.11-3.fc32

Fedora 32: new python37 packages.
New packages are available:
  Fedora 32: python37 3.7.8-2.fc32

openSUSE Leap 15.1: new python3 packages.
New packages are available:
  openSUSE Leap 15.1: python3 3.6.10-lp151.6.21.1

openSUSE Leap 15.1: new python-ipaddress packages.
New packages are available:
  openSUSE Leap 15.1: python-ipaddress 1.0.18-lp151.3.3.1

openSUSE Leap 15.2: new python3 packages.
New packages are available:
  openSUSE Leap 15.2: python3 3.6.10-lp152.4.3.1

openSUSE Leap 15.2: new python-ipaddress packages.
New packages are available:
  openSUSE Leap 15.2: python-ipaddress 1.0.18-lp152.4.3.1

Oracle Solaris: patch for third party software of October 2020 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 6, 7: new rh-python36 packages.
New packages are available:
  RHEL 6.0-6.10: rh-python36 python-3.6.12-1.el6
  RHEL 7.0-7.9: rh-python36 python-3.6.12-1.el7

RHEL 7: new python3 packages.
New packages are available:
  RHEL 7.0-7.9: python3 3.6.8-18.el7

RHEL 7: new rh-python38 packages.
New packages are available:
  RHEL 7.0-7.9: rh-python38 python-3.8.6-1.el7

RHEL 8: new python38-3.8 module.
The following module is updated:
  RHEL 8 Module: python38:3.8

RHEL 8: new python3 packages.
New packages are available:
  RHEL 8.0-8.2: python3 3.6.8-31.el8

SUSE LE 12: new python3 packages.
New packages are available:
  SUSE LE 12 SP5: python3 3.4.10-25.52.1
  SUSE LE 12 SP4: python3 3.4.10-25.52.1
  SUSE LE 12 SP3: python3 3.4.10-25.52.1
  SUSE LE 12 SP2: python3 3.4.10-25.52.1

SUSE LE 12: new python-ipaddress packages.
New packages are available:
  SUSE LE 12 SP2: python-ipaddress 1.0.18-3.13.1
  SUSE LE 12 SP3: python-ipaddress 1.0.18-3.13.1
  SUSE LE 12 SP4: python-ipaddress 1.0.18-3.13.1
  SUSE LE 12 SP5: python-ipaddress 1.0.18-3.13.1

SUSE LE 12 SP5: new python36 packages (01/12/2020).
New packages are available:
  SUSE LE 12 SP5: python36 3.6.12-4.22.2

SUSE LE 12 SP5: new python36 packages (13/08/2020).
New packages are available:
  SUSE LE 12 SP5: python36 3.6.10-4.17.1

SUSE LE 15: new python3 packages.
New packages are available:
  SUSE LE 15 RTM: python3 3.6.10-3.56.1
  SUSE LE 15 SP1: python3 3.6.10-3.56.1
  SUSE LE 15 SP2: python3 3.6.10-3.56.1

Ubuntu: new python packages.
New packages are available:
  Ubuntu 20.04 LTS: python3.8 3.8.2-1ubuntu1.2
  Ubuntu 18.04 LTS: python2.7 2.7.17-1~18.04ubuntu1.1, python3.6 3.6.9-1~18.04ubuntu1.1
  Ubuntu 16.04 LTS: python2.7 2.7.12-1ubuntu0~16.04.12, python3.5 3.5.2-2ubuntu0~16.04.11
  Ubuntu 14.04 ESM: python2.7 2.7.6-8ubuntu0.6+esm6, python3.4 3.4.3-1ubuntu1~14.04.7+esm7
  Ubuntu 12.04 ESM: python2.7 2.7.3-0ubuntu3.18

Wind River Linux: version 10.19.45.10.
The version 10.19.45.10 is fixed:
  https://support2.windriver.com/index.php?page=cve&on=list&show=50&product_id=1&product_version%5B0%5D=24&id_status%5B0%5D=4&cve_id_filter=&s=&submit=&order_by=cve_modified_date&order_way=desc#list
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