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Fencer Intel
medium 5.9

CVE-2020-14422 json

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow…

published 6y ago modified 26d ago also BIT-libpython-2020-14422 , BIT-python-2020-14422 , BIT-python-min-2020-14422 , EUVD-2020-6561

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.7%
EPSS 12.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.

Patch / fix

  • bitnami libpython 3.5.10, 3.6.12, 3.7.9, 3.8.4
  • bitnami python 3.5.10, 3.6.12, 3.7.9, 3.8.4
  • bitnami python-min 3.5.10, 3.6.12, 3.7.9, 3.8.4
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • python3.5 Ubuntu 16.04 LTS 3.5.2-2ubuntu0~16.04.11
  • python3.6 Ubuntu 18.04 LTS 3.6.9-1~18.04ubuntu1.1
  • python3.8 Ubuntu 20.04 LTS 3.8.2-1ubuntu1.2
  • python3.4 Ubuntu Pro 14.04 LTS 3.4.3-1ubuntu1~14.04.7+esm7
  • python3.5 Ubuntu Pro 14.04 LTS 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
  • python3.7 Ubuntu Pro 18.04 LTS 3.7.5-2ubuntu1~18.04.2+esm3
  • python3.8 Ubuntu Pro 18.04 LTS 3.8.0-3ubuntu1~18.04.2+esm2

ubuntu advisories UBUNTU-CVE-2020-14422

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rh-python38-python RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7
  • rh-python38-python-idle RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7
  • rh-python38-python-libs RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7
  • rh-python38-python-test RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7
  • rh-python38-python-psutil RHEL 3 SOFTWARE_COLLECTIONS 5.6.4-5.el7
  • rh-python38-python-tkinter RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7
  • rh-python38-python-urllib3 RHEL 3 SOFTWARE_COLLECTIONS 1.25.7-6.el7
  • rh-python38-python-rpm-macros RHEL 3 SOFTWARE_COLLECTIONS 3.8.6-1.el7

red hat advisories RHSA-2020:4299RHSA-2020:4641RHSA-2020:4285RHSA-2020:4433RHSA-2020:5010

  • python3 SLES for SAP 15, SLES 15-LTSS, SLE Module for Basesystem 15 SP2 +3 more 3.6.12-3.67.2
  • python3-core SLES for SAP 15, SLES 15-LTSS, SLE Module for Development Tools 15 SP2 +5 more 3.6.12-3.67.2
  • python36 SLES for SAP 12 SP5, SLES 12 SP5 3.6.12-4.22.2
  • python36-core SLES for SAP 12 SP5, SLES 12 SP5 3.6.12-4.22.2
  • python3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 3.4.10-25.52.1
  • python3-base SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 3.4.10-25.52.1
  • python36 SLES for SAP 12 SP5, SLES 12 SP5 3.6.10-4.17.1
  • python36-base SLES for SAP 12 SP5, SLES 12 SP5 3.6.10-4.17.1

suse advisories SUSE-SU-2020:3930-1SUSE-SU-2020:3563-1SUSE-SU-2020:2699-1SUSE-SU-2020:2216-1SUSE-SU-2020:2157-1SUSE-SU-2020:1940-1

  • python36 openSUSE Tumbleweed 3.6.15-1.1
  • python3 openSUSE Leap 15.1 3.6.12-lp151.6.32.1
  • python3-core openSUSE Leap 15.1 3.6.12-lp151.6.32.1
  • python3-documentation openSUSE Leap 15.1 3.6.12-lp151.6.32.1
  • python3 openSUSE Leap 15.2 3.6.12-lp152.4.14.1
  • python3-core openSUSE Leap 15.2 3.6.12-lp152.4.14.1
  • python3-documentation openSUSE Leap 15.2 3.6.12-lp152.4.14.1
  • python-ipaddress openSUSE Leap 15.2 1.0.18-lp152.4.3.1

opensuse advisories openSUSE-SU-2024:11284-1openSUSE-SU-2020:2333-1openSUSE-SU-2020:2332-1openSUSE-SU-2020:1002-1openSUSE-SU-2020:0989-1openSUSE-SU-2020:0940-1

  • python38-cffi AlmaLinux 8 1.13.2-3.module_el8.6.0+2778+cd494b30
  • python38-idna AlmaLinux 8 2.8-6.module_el8.6.0+2778+cd494b30
  • python38-pytz AlmaLinux 8 2019.3-3.module_el8.6.0+2778+cd494b30
  • python38-scipy AlmaLinux 8 1.3.1-4.module_el8.6.0+2778+cd494b30
  • python38-Cython AlmaLinux 8 0.29.14-4.module_el8.6.0+2778+cd494b30
  • python38-chardet AlmaLinux 8 3.0.4-19.module_el8.6.0+2778+cd494b30
  • python38-pysocks AlmaLinux 8 1.7.1-4.module_el8.6.0+2778+cd494b30
  • python38-mod_wsgi AlmaLinux 8 4.6.8-3.module_el8.6.0+2778+cd494b30

almalinux advisories ALSA-2020:4641

  • pytz Rocky Linux 8 2019.3-3.module+el8.4.0+570+c2eaf144
  • babel Rocky Linux 8 2.7.0-10.module+el8.4.0+570+c2eaf144
  • numpy Rocky Linux 8 1.17.3-5.module+el8.4.0+570+c2eaf144
  • scipy Rocky Linux 8 1.3.1-4.module+el8.5.0+672+ab6eb015
  • scipy Rocky Linux 8 1.3.1-4.module+el8.4.0+570+c2eaf144
  • Cython Rocky Linux 8 0.29.14-4.module+el8.4.0+570+c2eaf144
  • PyYAML Rocky Linux 8 5.3.1-1.module+el8.4.0+570+c2eaf144
  • mod_wsgi Rocky Linux 8 4.6.8-3.module+el8.4.0+570+c2eaf144

rocky linux advisories RLSA-2020:4641

  • python3 Alpine 3.10 3.7.7-r1
  • python3 Alpine 3.11 3.8.2-r1
  • python3 Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 3.8.4-r0
  • python3 Alpine 3.9 3.6.9-r3

alpine advisories ALPINE-CVE-2020-14422

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-14422 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-14422 updated cvss 5.9

python: DoS via inefficiency in IPv{4,6}Interface classes

  • Red Hat Enterprise Linux 5 python Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 python-pip, python3-pip, python-ipaddress Red Hat Enterprise Linux 8 python2-pip, python-ipaddress, python2-ipaddress, python2-pip-wheel Red Hat Quay 3 python-ipaddress Red Hat Software Collections python27-python-pip, rh-python38-python-pip, rh-python38-python-pip-wheel
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) python3-idle 3.6.8-31.el8, python3-test 3.6.8-31.el8, platform-python 3.6.8-31.el8, python3-tkinter 3.6.8-31.el8, pytz 2019.3-3.module+el8.2.0+5234+f98739b6, scipy 1.3.1-4.module+el8.2.0+5234+f98739b6, +63 more
    fixed: vendor fix RHSA-2020:4641
  • Red Hat Enterprise Linux BaseOS (v. 8) python3 3.6.8-31.el8, python3-libs 3.6.8-31.el8, python3-test 3.6.8-31.el8, platform-python 3.6.8-31.el8
    fixed: vendor fix RHSA-2020:4433
  • Red Hat Enterprise Linux Client (v. 7) python3 3.6.8-18.el7, python3-libs 3.6.8-18.el7 Red Hat Enterprise Linux Client Optional (v. 7) python3 3.6.8-18.el7, python3-idle 3.6.8-18.el7, python3-test 3.6.8-18.el7, python3-tkinter 3.6.8-18.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python3 3.6.8-18.el7, python3-idle 3.6.8-18.el7, python3-test 3.6.8-18.el7, python3-tkinter 3.6.8-18.el7 Red Hat Enterprise Linux Server (v. 7) python3 3.6.8-18.el7, python3-libs 3.6.8-18.el7 Red Hat Enterprise Linux Server Optional (v. 7) python3 3.6.8-18.el7, python3-idle 3.6.8-18.el7, python3-test 3.6.8-18.el7, python3-tkinter 3.6.8-18.el7 Red Hat Enterprise Linux Workstation (v. 7) python3 3.6.8-18.el7, python3-libs 3.6.8-18.el7
    +1 more products
    Red Hat Enterprise Linux Workstation Optional (v. 7) python3 3.6.8-18.el7, python3-idle 3.6.8-18.el7, python3-test 3.6.8-18.el7, python3-tkinter 3.6.8-18.el7
    fixed: vendor fix RHSA-2020:5010
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-python36-python 3.6.12-1.el6, rh-python36-python-pip 9.0.1-5.el6, rh-python36-python-libs 3.6.12-1.el6, rh-python36-python-test 3.6.12-1.el6, rh-python36-python-tools 3.6.12-1.el6, rh-python36-python-tkinter 3.6.12-1.el6, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-python38-python 3.8.6-1.el7, rh-python36-python 3.6.12-1.el7, rh-python36-python-pip 9.0.1-5.el7, rh-python38-python-idle 3.8.6-1.el7, rh-python38-python-libs 3.8.6-1.el7, rh-python38-python-test 3.8.6-1.el7, +10 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-python38-python 3.8.6-1.el7, rh-python36-python 3.6.12-1.el7, rh-python36-python-pip 9.0.1-5.el7, rh-python38-python-idle 3.8.6-1.el7, rh-python38-python-libs 3.8.6-1.el7, rh-python38-python-test 3.8.6-1.el7, +10 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-python38-python 3.8.6-1.el7, rh-python36-python 3.6.12-1.el7, rh-python36-python-pip 9.0.1-5.el7, rh-python38-python-idle 3.8.6-1.el7, rh-python38-python-libs 3.8.6-1.el7, rh-python38-python-test 3.8.6-1.el7, +10 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-python36-python 3.6.12-1.el6, rh-python36-python-pip 9.0.1-5.el6, rh-python36-python-libs 3.6.12-1.el6, rh-python36-python-test 3.6.12-1.el6, rh-python36-python-tools 3.6.12-1.el6, rh-python36-python-tkinter 3.6.12-1.el6, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-python38-python 3.8.6-1.el7, rh-python36-python 3.6.12-1.el7, rh-python36-python-pip 9.0.1-5.el7, rh-python38-python-idle 3.8.6-1.el7, rh-python38-python-libs 3.8.6-1.el7, rh-python38-python-test 3.8.6-1.el7, +10 more
    fixed: vendor fix RHSA-2020:4285
  • Red Hat Enterprise Linux 8 scipy, python36, python-pip, python-nose, python3-pip, python-wheel, +23 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 5.9

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last mo.

Exploit prediction

12.71% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami libpython
>=3.0.0, <3.5.10
>=3.6.0, <3.6.12
>=3.7.0, <3.7.9
>=3.8.0, <3.8.4
3.5.10
3.6.12
3.7.9
3.8.4
bitnami python
>=3.0.0, <3.5.10
>=3.6.0, <3.6.12
>=3.7.0, <3.7.9
>=3.8.0, <3.8.4
3.5.10
3.6.12
3.7.9
3.8.4
bitnami python-min
>=3.0.0, <3.5.10
>=3.6.0, <3.6.12
>=3.7.0, <3.7.9
>=3.8.0, <3.8.4
3.5.10
3.6.12
3.7.9
3.8.4

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-330 Use of Insufficiently Random Values
  • CWE-682 Incorrect Calculation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.