USN-4151-1: Python vulnerabilities

9 October 2019

python2.7, python3.5, python3.6, python3.7 vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Python.

Software Description

  • python2.7 - An interactive high-level object-oriented language
  • python3.7 - An interactive high-level object-oriented language
  • python3.6 - An interactive high-level object-oriented language
  • python3.5 - An interactive high-level object-oriented language

Details

It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting (XSS) attack. (CVE-2019-16935)

Update instructions

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

Ubuntu 19.04
python2.7 - 2.7.16-2ubuntu0.2
python2.7-minimal - 2.7.16-2ubuntu0.2
python3.7 - 3.7.3-2ubuntu0.2
python3.7-minimal - 3.7.3-2ubuntu0.2
Ubuntu 18.04 LTS
python2.7 - 2.7.15-4ubuntu4~18.04.2
python2.7-minimal - 2.7.15-4ubuntu4~18.04.2
python3.6 - 3.6.8-1~18.04.3
python3.6-minimal - 3.6.8-1~18.04.3
Ubuntu 16.04 LTS
python2.7 - 2.7.12-1ubuntu0~16.04.9
python2.7-minimal - 2.7.12-1ubuntu0~16.04.9
python3.5 - 3.5.2-2ubuntu0~16.04.9
python3.5-minimal - 3.5.2-2ubuntu0~16.04.9

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.

References