A Python 2.7 security update has been released for Ubuntu Linux 16.04 LTS and 18.04 LTS.
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Ubuntu Security Notice USN-4754-4
March 03, 2021
python2.7 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Python could be made to execute arbitrary code or denial of service if it
received a specially crafted input.
Software Description:
- python2.7: An interactive high-level object-oriented language
Details:
USN-4754-1 fixed vulnerabilities in Python. Because of a regression, a
subsequent update removed the fix for CVE-2021-3177. This update reinstates
the security fix for CVE-2021-3177.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code
or cause a denial of service. (CVE-2020-27619, CVE-2021-3177)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
python2.7 2.7.17-1~18.04ubuntu1.6
python2.7-minimal 2.7.17-1~18.04ubuntu1.6
Ubuntu 16.04 LTS:
python2.7 2.7.12-1ubuntu0~16.04.18
python2.7-minimal 2.7.12-1ubuntu0~16.04.18
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4754-4
https://usn.ubuntu.com/4754-1
CVE-2021-3177
Package Information:
https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.6
https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.18
