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: libpython3.8, libpython2.7-dev, python3.8-dev, python3.7-dev, libpython2.7, python3.8, python3.8-venv, python3.7-doc, libpython3.7-testsuite, libpython3.8-minimal, libpython3.8-testsuite, python3.7, python2.7-minimal, python2.7-dev, python2.7-doc, libpython3.8-dev, libpython2.7-testsuite, python3.7-minimal, idle-python2.7, libpython3.8-stdlib, libpython2.7-stdlib, python2.7, idle-python3.8, python3.7-venv, python3.7-examples, python3.8-examples, libpython3.7-stdlib, python3.8-minimal, libpython2.7-minimal, libpython3.7-dev, python2.7-examples, idle-python3.7, libpython3.7-minimal, libpython3.7