CVE-2020-27619: Critical severity python 2.7 vulnerability

Published Oct 5, 2020
·
Updated

An unspecified error with CJK codec tests call eval() on content retrieved throug HTTP in multibytecodecsupport.py in Python has an unknown impact and attack vector.

Other sources

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

In Python3's Lib/test/multibytecodecsupport.py CJK codec tests call eval() on content retrieved via HTTP.

Affected Software

26 affected componentsFixes available
redhat/python3<0:3.6.8-37.el8
0:3.6.8-37.el8
redhat/python27-babel<0:0.9.6-10.el7
0:0.9.6-10.el7
redhat/python27-python<0:2.7.18-3.el7
0:2.7.18-3.el7
redhat/python27-python-jinja2<0:2.6-16.el7
0:2.6-16.el7
redhat/python27-python-pygments<0:1.5-5.el7
0:1.5-5.el7
redhat/rh-python38-babel<0:2.7.0-12.el7
0:2.7.0-12.el7
redhat/rh-python38-python<0:3.8.11-2.el7
0:3.8.11-2.el7
redhat/rh-python38-python-cryptography<0:2.8-5.el7
0:2.8-5.el7
redhat/rh-python38-python-jinja2<0:2.10.3-6.el7
0:2.10.3-6.el7
redhat/rh-python38-python-lxml<0:4.4.1-7.el7
0:4.4.1-7.el7
redhat/rh-python38-python-pip<0:19.3.1-2.el7
0:19.3.1-2.el7
redhat/rh-python38-python-urllib3<0:1.25.7-7.el7
0:1.25.7-7.el7
redhat/python<3.6.13
3.6.13
redhat/python<3.7.10
3.7.10
redhat/python<3.8.7
3.8.7
redhat/python<3.9.1
3.9.1
Python Python>=3.0.0<3.6.13
Python Python>=3.7.0<3.7.10
Python Python>=3.8.0<3.8.7
Python Python>=3.9.0<3.9.1
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Oracle Communications Cloud Native Core Network Function Cloud Native Environment=22.2.0
debian/pypy3
7.3.5+dfsg-2+deb11u27.3.5+dfsg-2+deb11u47.3.11+dfsg-2+deb12u37.3.19+dfsg-1
debian/python2.7<=2.7.18-8+deb11u1
debian/python3.9
3.9.2-13.9.2-1+deb11u3

Remediation

Information

In versions of Python shipped with Red Hat Enterprise Linux and Red Hat Software Collections, the flaw can be mitigated by not running the python tests with network resources enabled. By default, the tests are not run with network resources enabled. Ensure that `-u network` or `-uall` are not passed as options to `python -m test`. For more information on how these commands work, see [1]. 1. https://docs.python.org/3/library/test.html

Event History

Oct 5, 2020
CVE Published
12:00 AM
Oct 22, 2020
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Feb 17, 2024
Data Sourced
via Launchpad·12:10 AM
Description
Aug 3, 2024
Data Sourced
via IBM·10:19 PM
DescriptionSeverityAffected Software
Sep 16, 2024
Data Sourced
via Ubuntu·02:26 AM
RemedyDescriptionSeverityAffected Software
Apr 2, 2025
Data Sourced
via Debian·11:43 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2020-27619?

The severity of CVE-2020-27619 is critical with a CVSS score of 9.8.

2

How does CVE-2020-27619 impact Python?

CVE-2020-27619 is an unspecified error with CJK codec tests in Python that calls eval() on content retrieved through HTTP, with an unknown impact and attack vector.

3

Which versions of Python are affected by CVE-2020-27619?

Python versions 3.6.13, 3.7.10, 3.8.7, and 3.9.1 are affected by CVE-2020-27619.

4

What is the recommended remedy for CVE-2020-27619 in Python?

To fix CVE-2020-27619 in Python, update to the following versions or later: 3.6.14, 3.7.11, 3.8.8, or 3.9.2.

5

Where can I find more information about CVE-2020-27619?

You can find more information about CVE-2020-27619 at the following references: [Link 1](https://bugs.python.org/issue41944), [Link 2](https://github.com/python/cpython/commit/2ef5caa58febc8968e670e39e3d37cf8eef3cab8), [Link 3](https://github.com/python/cpython/commit/b664a1df4ee71d3760ab937653b10997081b1794).

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