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List: ubuntu-security-announce
Subject: [USN-4754-2] Python regression
From: "Leonidas S. Barbosa" <leo.barbosa () canonical ! com>
Date: 2021-02-25 19:43:12
Message-ID: 20210225194312.GA1485127 () d4rkl41n
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==========================================================================
Ubuntu Security Notice USN-4754-2
February 25, 2021
python2.7 regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
Summary:
USN-4754-1 introduced a regression in Python2.7.
Software Description:
- python2.7: An interactive high-level object-oriented language
Details:
USN-4754-1 fixed a vulnerability in Python. The fix for CVE-2021-3177 introduced a
regression in Python 2.7. This update reverts the security fix pending further investigation.
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 2.7.17-1~18.04ubuntu1.5
python2.7-minimal 2.7.17-1~18.04ubuntu1.5
Ubuntu 16.04 LTS:
python2.7 2.7.12-1ubuntu0~16.04.16
python2.7-minimal 2.7.12-1ubuntu0~16.04.16
Ubuntu 14.04 ESM:
python2.7 2.7.6-8ubuntu0.6+esm9
python2.7-minimal 2.7.6-8ubuntu0.6+esm9
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4754-2
https://usn.ubuntu.com/4754-1
https://launchpad.net/bugs/1916893
Package Information:
https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.5
https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.16
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