CVE-2020-27619: Critical severity Python Python 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

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/python3 to a version that resolves this vulnerability.

    Fixed in 0:3.6.8-37.el8
  2. Upgrade

    Upgrade redhat/python27-babel to a version that resolves this vulnerability.

    Fixed in 0:0.9.6-10.el7
  3. Upgrade

    Upgrade redhat/python27-python to a version that resolves this vulnerability.

    Fixed in 0:2.7.18-3.el7
  4. Upgrade

    Upgrade redhat/python27-python-jinja2 to a version that resolves this vulnerability.

    Fixed in 0:2.6-16.el7
  5. Upgrade

    Upgrade redhat/python27-python-pygments to a version that resolves this vulnerability.

    Fixed in 0:1.5-5.el7
  6. Upgrade

    Upgrade redhat/rh-python38-babel to a version that resolves this vulnerability.

    Fixed in 0:2.7.0-12.el7
  7. Upgrade

    Upgrade redhat/rh-python38-python to a version that resolves this vulnerability.

    Fixed in 0:3.8.11-2.el7
  8. Upgrade

    Upgrade redhat/rh-python38-python-cryptography to a version that resolves this vulnerability.

    Fixed in 0:2.8-5.el7
  9. Upgrade

    Upgrade redhat/rh-python38-python-jinja2 to a version that resolves this vulnerability.

    Fixed in 0:2.10.3-6.el7
  10. Upgrade

    Upgrade redhat/rh-python38-python-lxml to a version that resolves this vulnerability.

    Fixed in 0:4.4.1-7.el7
  11. Upgrade

    Upgrade redhat/rh-python38-python-pip to a version that resolves this vulnerability.

    Fixed in 0:19.3.1-2.el7
  12. Upgrade

    Upgrade redhat/rh-python38-python-urllib3 to a version that resolves this vulnerability.

    Fixed in 0:1.25.7-7.el7
  13. Upgrade

    Upgrade redhat/python to a version that resolves this vulnerability.

    Fixed in 3.6.13
  14. Upgrade

    Upgrade redhat/python to a version that resolves this vulnerability.

    Fixed in 3.7.10
  15. Upgrade

    Upgrade redhat/python to a version that resolves this vulnerability.

    Fixed in 3.8.7
  16. Upgrade

    Upgrade redhat/python to a version that resolves this vulnerability.

    Fixed in 3.9.1
  17. Upgrade

    Upgrade debian/pypy3 to a version that resolves this vulnerability.

    Fixed in 7.3.5+dfsg-2+deb11u2Fixed in 7.3.5+dfsg-2+deb11u4Fixed in 7.3.11+dfsg-2+deb12u3Fixed in 7.3.19+dfsg-1
  18. Upgrade

    Upgrade debian/python3.9 to a version that resolves this vulnerability.

    Fixed in 3.9.2-1Fixed in 3.9.2-1+deb11u3
  19. Configuration

    Do not pass -u network or -uall to python -m test; run the tests without network resources enabled.

    Python test suite network test resources = disabled

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
Data Sourced
via NVD·03:16 AM
RemedyDescriptionSeverityAffected Software
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

Parent advisories

This vulnerability appears in the following advisories.

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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