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Fencer Intel
critical 9.8

CVE-2020-27619 json

In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP.

published 6y ago modified last mo. also BIT-libpython-2020-27619 , BIT-python-2020-27619 , BIT-python-min-2020-27619 , EUVD-2020-20126

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.3%
EPSS 8.3% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP.

Patch / fix

  • bitnami libpython 3.6.13, 3.7.10, 3.8.7, 3.9.1
  • bitnami python 3.6.13, 3.7.10, 3.8.7, 3.9.1
  • bitnami python-min 3.6.13, 3.7.10, 3.8.7, 3.9.1
  • python python 3.6.13, 3.7.10, 3.8.7, 3.9.1
  • pypy3 Debian 14, Debian 13, Debian 12 7.3.5+dfsg-2

debian advisories DEBIAN-CVE-2020-27619

  • python3.5 Ubuntu 16.04 LTS 3.5.2-2ubuntu0~16.04.13
  • python3.6 Ubuntu 18.04 LTS 3.6.9-1~18.04ubuntu1.4
  • python3.7 Ubuntu 18.04 LTS 3.7.5-2~18.04.4
  • python3.8 Ubuntu 18.04 LTS 3.8.0-3~18.04.1
  • python3.8 Ubuntu 20.04 LTS 3.8.5-1~20.04.2
  • python3.4 Ubuntu Pro 14.04 LTS 3.4.3-1ubuntu1~14.04.7+esm10
  • python3.5 Ubuntu Pro 14.04 LTS 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

ubuntu advisories UBUNTU-CVE-2020-27619

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

  • pytz RHEL 8 2019.3-3.module+el8.4.0+8888+89bc7e79
  • babel RHEL 8 2.7.0-11.module+el8.5.0+11015+9c1c7c42
  • numpy RHEL 8 1.17.3-6.module+el8.5.0+12205+a865257a
  • scipy RHEL 8 1.3.1-4.module+el8.4.0+8888+89bc7e79
  • Cython RHEL 8 0.29.14-4.module+el8.4.0+8888+89bc7e79
  • pytest RHEL 8 4.6.6-3.module+el8.4.0+8888+89bc7e79
  • PyYAML RHEL 8 5.4.1-1.module+el8.5.0+10721+14d8e0d5
  • mod_wsgi RHEL 8 4.6.8-3.module+el8.4.0+8888+89bc7e79

red hat advisories RHSA-2021:4162RHSA-2021:4151RHSA-2021:3252RHSA-2021:3254RHSA-2021:1633

  • python3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +12 more 3.4.10-25.71.1
  • python3-base SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +12 more 3.4.10-25.71.1
  • 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 3.6.12-4.25.1
  • python36-core SLES for SAP 12 SP5, SLES 12 SP5 3.6.12-4.25.1

suse advisories SUSE-SU-2021:1621-1SUSE-SU-2020:3930-1SUSE-SU-2020:3865-1

  • 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

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

  • python38-py AlmaLinux 8 1.8.0-8.module_el8.6.0+2778+cd494b30
  • python38-ply AlmaLinux 8 3.11-10.module_el8.6.0+2778+cd494b30
  • python38-six AlmaLinux 8 1.12.0-10.module_el8.6.0+2778+cd494b30
  • 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-attrs AlmaLinux 8 19.3.0-3.module_el8.6.0+2778+cd494b30
  • python38-babel AlmaLinux 8 2.7.0-11.module_el8.6.0+2778+cd494b30

almalinux advisories ALSA-2021:4162ALSA-2021:4151

  • pytz Rocky Linux 8 2019.3-3.module+el8.4.0+570+c2eaf144
  • babel Rocky Linux 8 2.7.0-11.module+el8.5.0+672+ab6eb015
  • numpy Rocky Linux 8 1.17.3-6.module+el8.5.0+672+ab6eb015
  • 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
  • pytest Rocky Linux 8 4.6.6-3.module+el8.4.0+570+c2eaf144
  • PyYAML Rocky Linux 8 5.4.1-1.module+el8.5.0+672+ab6eb015

rocky linux advisories RLSA-2021:4162RLSA-2021:4151

Is CVE-2020-27619 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-2020-27619 updated cvss 7.5

python: Unsafe use of eval() on data retrieved via HTTP in the test suite

  • Red Hat Enterprise Linux 5 python Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools Red Hat Enterprise Linux 7 python, python3, tkinter, python-libs, python-test, python-tools, +4 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Quay 3 quay
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Software Collections rh-python36-python, rh-python36-python-libs, rh-python36-python-test, rh-python36-python-tools, rh-python36-python-tkinter
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) pytest 4.6.6-3.module+el8.4.0+8888+89bc7e79, python-py 1.8.0-8.module+el8.4.0+8888+89bc7e79, python38-py 1.8.0-8.module+el8.4.0+8888+89bc7e79, python-attrs 19.3.0-3.module+el8.4.0+8888+89bc7e79, python-pluggy 0.13.0-3.module+el8.4.0+8888+89bc7e79, python-packaging 19.2-3.module+el8.4.0+8888+89bc7e79, +12 more
    fixed: vendor fix RHSA-2021:4162
  • Red Hat Enterprise Linux AppStream (v. 8) python3-idle 3.6.8-37.el8, python3-test 3.6.8-37.el8, platform-python 3.6.8-37.el8, python3-tkinter 3.6.8-37.el8, pytz 2019.3-3.module+el8.4.0+8888+89bc7e79, scipy 1.3.1-4.module+el8.4.0+8888+89bc7e79, +152 more Red Hat Enterprise Linux BaseOS (v. 8) python3 3.6.8-37.el8, python3-libs 3.6.8-37.el8, python3-test 3.6.8-37.el8, platform-python 3.6.8-37.el8
    fixed: vendor fix RHSA-2021:1633
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python27-babel 0.9.6-10.el7, python27-python 2.7.18-3.el7, python27-tkinter 2.7.18-3.el7, rh-python38-babel 2.7.0-12.el7, rh-python38-python 3.8.11-2.el7, python27-python-jinja2 2.6-16.el7, +18 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) python27-babel 0.9.6-10.el7, python27-python 2.7.18-3.el7, python27-tkinter 2.7.18-3.el7, rh-python38-babel 2.7.0-12.el7, rh-python38-python 3.8.11-2.el7, python27-python-jinja2 2.6-16.el7, +18 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python27-babel 0.9.6-10.el7, python27-python 2.7.18-3.el7, python27-tkinter 2.7.18-3.el7, rh-python38-babel 2.7.0-12.el7, rh-python38-python 3.8.11-2.el7, python27-python-jinja2 2.6-16.el7, +18 more
    fixed: vendor fix RHSA-2021:3252
  • Red Hat Enterprise Linux 8 scipy, python36, python-nose, python-wheel, python3-bson, python3-nose, +19 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 SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
last mo.

Exploit prediction

8.33% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami libpython
>=3.0.0, <3.6.13
>=3.7.0, <3.7.10
>=3.8.0, <3.8.7
>=3.9.0, <3.9.1
3.6.13
3.7.10
3.8.7
3.9.1
bitnami python
>=3.0.0, <3.6.13
>=3.7.0, <3.7.10
>=3.8.0, <3.8.7
>=3.9.0, <3.9.1
3.6.13
3.7.10
3.8.7
3.9.1
bitnami python-min
>=3.0.0, <3.6.13
>=3.7.0, <3.7.10
>=3.8.0, <3.8.7
>=3.9.0, <3.9.1
3.6.13
3.7.10
3.8.7
3.9.1

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.