USN-4428-1: Python vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• python2.7 - An interactive high-level object-oriented language
• python3.4 - An interactive high-level object-oriented language
• python3.5 - An interactive high-level object-oriented language
• python3.6 - An interactive high-level object-oriented language
• python3.8 - Interactive high-level object-oriented language (version 3.8)

Details

It was discovered that Python documentation had a misleading information.
A security issue could be possibly caused by wrong assumptions of this information.
This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM, Ubuntu 16.04 LTS and
Ubuntu 18.04 LTS. (CVE-2019-17514)

It was discovered that Python incorrectly handled certain TAR archives.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2019-20907)

It was discovered that incorrectly handled certain ZIP files. An attacker
could possibly use this issue to cause a denial of service. This issue only
affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2019-9674)

It was discovered that Python incorrectly handled certain IP values.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2020-14422)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

• python3.8 - 3.8.2-1ubuntu1.2
• python3.8-minimal - 3.8.2-1ubuntu1.2

Ubuntu 18.04

• python2.7 - 2.7.17-1~18.04ubuntu1.1
• python2.7-minimal - 2.7.17-1~18.04ubuntu1.1
• python3.6 - 3.6.9-1~18.04ubuntu1.1
• python3.6-minimal - 3.6.9-1~18.04ubuntu1.1

Ubuntu 16.04

• python2.7 - 2.7.12-1ubuntu0~16.04.12
• python2.7-minimal - 2.7.12-1ubuntu0~16.04.12
• python3.5 - 3.5.2-2ubuntu0~16.04.11
• python3.5-minimal - 3.5.2-2ubuntu0~16.04.11

Ubuntu 14.04

• python2.7 - 2.7.6-8ubuntu0.6+esm6
• python2.7-minimal - 2.7.6-8ubuntu0.6+esm6
• python3.4 - 3.4.3-1ubuntu1~14.04.7+esm7
• python3.4-minimal - 3.4.3-1ubuntu1~14.04.7+esm7

Ubuntu 12.04

• python2.7 - 2.7.3-0ubuntu3.18
• python2.7-minimal - 2.7.3-0ubuntu3.18

In general, a standard system update will make all the necessary changes.

References

• CVE-2019-20907
• CVE-2019-9674
• CVE-2019-17514
• CVE-2020-14422

Related notices

• USN-4754-3: python3.8-dev, libpython3.8-stdlib, idle-python2.7, python3.7-doc, python2.7-examples, libpython3.8-minimal, python3.7-minimal, libpython3.7-stdlib, python2.7-minimal, libpython3.7-dev, libpython3.8-testsuite, libpython3.7-minimal, python2.7, python2.7-dev, python3.8-examples, libpython3.7, python3.7, libpython2.7-dev, libpython2.7-stdlib, libpython2.7-minimal, libpython3.8, libpython2.7, libpython2.7-testsuite, python3.7-examples, python3.8, python3.8-minimal, python3.7-venv, python2.7-doc, python3.8-venv, python3.7-dev, libpython3.8-dev, idle-python3.7, libpython3.7-testsuite, idle-python3.8
• USN-6891-1: libpython3.8-minimal, python3.10-venv, python3.5-minimal, python3.12, libpython3.10-testsuite, python3.10-dev, libpython3.6, libpython3.10-minimal, idle-python3.11, libpython3.6-testsuite, libpython3.10-stdlib, python3.11, python3.11-venv, libpython3.7, libpython3.6-minimal, libpython3.11-stdlib, python3.9-dev, libpython3.12, libpython3.12-dev, python3.7-examples, python3.12-minimal, libpython3.5-stdlib, python3.7-dev, idle-python3.10, python3.8-full, python3.9, libpython3.7-testsuite, libpython3.9, libpython3.8-stdlib, libpython3.11, python3.6-dev, python3.7-minimal, libpython3.12-minimal, python3.5-examples, python3.5-doc, python3.11-examples, libpython3.7-dev, libpython3.7-minimal, python3.12-examples, python3.9-full, python3.11-doc, python3.5-venv, python3.11-nopie, python3.6-minimal, python3.10-nopie, python3.8, python3.6-examples, idle-python3.5, libpython3.11-minimal, python3.8-venv, python3.12-nopie, python3.10-doc, libpython3.8-dev, python3.11-minimal, python3.8-doc, python3.8-dev, libpython3.9-stdlib, python3.7-doc, libpython3.8-testsuite, python3.9-venv, python3.12-dev, python3.12-full, python3.5, python3.8-examples, python3.7, python3.10-examples, libpython3.6-dev, libpython3.5-testsuite, libpython3.8, libpython3.6-stdlib, python3.10-full, libpython3.12-stdlib, python3.6-venv, idle-python3.6, python3.12-venv, python3.6-doc, python3.6, libpython3.10-dev, idle-python3.7, libpython3.5-dev, python3.5-dev, idle-python3.9, libpython3.11-testsuite, libpython3.9-testsuite, python3.11-full, python3.9-minimal, libpython3.12-testsuite, libpython3.7-stdlib, idle-python3.12, libpython3.5, python3.12-doc, python3.9-doc, libpython3.10, libpython3.5-minimal, libpython3.11-dev, python3.10, libpython3.9-dev, python3.10-minimal, python3.8-minimal, python3.11-dev, python3.7-venv, libpython3.9-minimal, python3.9-examples, idle-python3.8