USN-3496-3: Python vulnerability

Ubuntu Security Notice USN-3496-3

28th November, 2017

A security issue affects these releases of Ubuntu and its
derivatives:

Python could be made to run arbitrary code.

USN-3496-1 fixed a vulnerability in Python2.7. This update provides
the corresponding update for versions 3.4 and 3.5.

Original advisory details:

It was discovered that Python incorrectly handled decoding certain strings.
An attacker could possibly use this issue to execute arbitrary code.

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

Ubuntu 17.04:: python3.5

3.5.3-1ubuntu0~17.04.2; python3.5-minimal

3.5.3-1ubuntu0~17.04.2
Ubuntu 16.04 LTS:: python3.5

3.5.2-2ubuntu0~16.04.4; python3.5-minimal

3.5.2-2ubuntu0~16.04.4
Ubuntu 14.04 LTS:: python3.4

3.4.3-1ubuntu1~14.04.6; python3.4-minimal

3.4.3-1ubuntu1~14.04.6

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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