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USN-5342-1: Python vulnerabilities

28 March 2022

Several security issues were fixed in Python.

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Releases

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 - An interactive high-level object-oriented language

Details

David Schwörer discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)

It was discovered that Python incorrectly handled certain FTP requests.
An attacker could possibly use this issue to expose sensitive information.
This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS.
(CVE-2021-4189)

It was discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2022-0391)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

Related notices

  • USN-5342-2: idle-python2.7, libpython2.7-minimal, python2.7-doc, python2.7-dev, libpython2.7, libpython2.7-stdlib, python2.7, libpython2.7-dev, python2.7-minimal, libpython2.7-testsuite, python2.7-examples
  • USN-5342-3: libpython3.7-stdlib, python3.7, idle-python3.7, libpython3.7-dev, python3.7-doc, python3.7-examples, libpython3.7-minimal, python3.7-dev, python3.7-venv, python3.7-minimal, libpython3.7, libpython3.7-testsuite