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USN-4973-2: Python vulnerability

4 October 2021

Python could allow unintended access to network services.

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Releases

Packages

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

Details

USN-4973-1 fixed this vulnerability previously, but it was re-introduced
in python3.8 in focal because of the SRU in LP: #1928057. This update fixes
the problem.

Original advisory 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.

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

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

Related notices

  • USN-4973-1: libpython3.8-testsuite, python3.8-minimal, python3.8-venv, python3.8, libpython3.8, libpython3.8-minimal, idle-python3.8, python3.8-doc, python3.8-examples, libpython3.8-dev, libpython3.8-stdlib, python3.8-dev