[USN-4151-1] Python vulnerabilities

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[USN-4151-1] Python vulnerabilities

Marc Deslauriers-3
==========================================================================
Ubuntu Security Notice USN-4151-1
October 09, 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

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

References:
  https://usn.ubuntu.com/4151-1
  CVE-2019-16056, CVE-2019-16935

Package Information:
  https://launchpad.net/ubuntu/+source/python2.7/2.7.16-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/python3.7/3.7.3-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/python2.7/2.7.15-4ubuntu4~18.04.2
  https://launchpad.net/ubuntu/+source/python3.6/3.6.8-1~18.04.3
  https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.9
  https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.9


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