Ubuntu Security Notices
USN-4581-1

USN-4581-1: Python vulnerability

Publication date

14 October 2020

Overview

Python could be used to perform a CRLF injection if it received a specially crafted request.

Releases

18.04 LTS 16.04 LTS 14.04 LTS 12.04

Packages

python2.7 - An interactive high-level object-oriented language
python3.4 - An interactive high-level object-oriented language
python3.5 - An interactive high-level object-oriented language
python3.6 - An interactive high-level object-oriented language

Details

It was discovered that Python incorrectly handled certain character
sequences. A remote attacker could possibly use this issue to perform
CRLF injection.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release	Package Version
18.04 bionic	python2.7 – 2.7.17-1~18.04ubuntu1.2
	python2.7-minimal – 2.7.17-1~18.04ubuntu1.2
	python3.6 – 3.6.9-1~18.04ubuntu1.3
	python3.6-minimal – 3.6.9-1~18.04ubuntu1.3
16.04 xenial	python2.7 – 2.7.12-1ubuntu0~16.04.13
	python2.7-minimal – 2.7.12-1ubuntu0~16.04.13
	python3.5 – 3.5.2-2ubuntu0~16.04.12
	python3.5-minimal – 3.5.2-2ubuntu0~16.04.12
14.04 trusty	python2.7 – 2.7.6-8ubuntu0.6+esm7
	python2.7-minimal – 2.7.6-8ubuntu0.6+esm7
	python3.4 – 3.4.3-1ubuntu1~14.04.7+esm8
	python3.4-minimal – 3.4.3-1ubuntu1~14.04.7+esm8
12.04 precise	python2.7 – 2.7.3-0ubuntu3.19
12.04 precise	python2.7-minimal – 2.7.3-0ubuntu3.19

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References

CVE-2020-26116

CVE-2020-26116