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-full, python3.8-examples, python3.8-dev, python3.8-minimal, libpython3.8-dev, python3.8, libpython3.8-testsuite, idle-python3.8, libpython3.8-minimal, python3.8-doc, python3.8-venv, libpython3.8, libpython3.8-stdlib