USN-4973-1: Python vulnerability

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS

Packages

• python3.8 - An interactive high-level object-oriented language

Details

It was discovered that the Python stdlib ipaddress API incorrectly handled
octal strings. A remote attacker could possibly use this issue to perform a
wide variety of attacks, including bypassing certain access restrictions.

Update instructions

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

Ubuntu 20.10

• python3.8-minimal - 3.8.6-1ubuntu0.3
• python3.8 - 3.8.6-1ubuntu0.3

Ubuntu 20.04

• python3.8-minimal - 3.8.5-1~20.04.3
• python3.8 - 3.8.5-1~20.04.3

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

References

• CVE-2021-29921

Related notices

• USN-4973-2: python3.8, libpython3.8, libpython3.8-dev, python3.8-dev, python3.8-doc, python3.8-examples, python3.8-full, python3.8-minimal, python3.8-venv, libpython3.8-testsuite, idle-python3.8, libpython3.8-stdlib, libpython3.8-minimal
• USN-6891-1: libpython3.11-stdlib, libpython3.9-stdlib, python3.11-examples, python3.6-dev, python3.9-full, libpython3.11-dev, libpython3.7-dev, python3.10-minimal, python3.7, libpython3.5-stdlib, python3.8-venv, python3.10, libpython3.10-dev, python3.8-doc, python3.6, python3.8-minimal, libpython3.12-dev, python3.9-venv, libpython3.8-minimal, python3.7-minimal, libpython3.9-dev, python3.9-minimal, python3.8-examples, libpython3.9, libpython3.7-minimal, idle-python3.8, python3.6-examples, python3.10-full, idle-python3.9, python3.8-full, python3.11-venv, python3.5-venv, idle-python3.7, libpython3.6-minimal, libpython3.12-testsuite, python3.6-minimal, libpython3.8-dev, python3.7-dev, python3.7-doc, libpython3.9-testsuite, python3.8, python3.10-nopie, idle-python3.5, libpython3.8-testsuite, python3.5-examples, python3.11-nopie, libpython3.10-minimal, libpython3.6, python3.5, python3.12-minimal, libpython3.7, python3.12-examples, python3.5-doc, python3.11-dev, libpython3.10, idle-python3.11, python3.7-venv, idle-python3.10, libpython3.8-stdlib, idle-python3.12, libpython3.8, libpython3.9-minimal, python3.12, python3.11-minimal, python3.12-dev, idle-python3.6, libpython3.10-testsuite, libpython3.6-dev, python3.5-minimal, python3.8-dev, libpython3.5, python3.12-nopie, libpython3.7-testsuite, python3.5-dev, python3.9, python3.11-doc, python3.7-examples, libpython3.12-minimal, libpython3.12-stdlib, python3.9-examples, libpython3.6-stdlib, libpython3.7-stdlib, libpython3.10-stdlib, libpython3.11-testsuite, libpython3.6-testsuite, libpython3.11-minimal, python3.12-doc, python3.9-dev, python3.12-full, libpython3.11, libpython3.5-minimal, libpython3.5-testsuite, python3.11, python3.12-venv, libpython3.12, python3.10-doc, python3.6-doc, python3.6-venv, libpython3.5-dev, python3.11-full, python3.10-dev, python3.10-venv, python3.9-doc, python3.10-examples