Ubuntu Security Notice USN-4754-2 ≈ Packet Storm – Digitalmunition

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Published on February 26th, 2021 📆 | 2692 Views ⚑


Ubuntu Security Notice USN-4754-2 ≈ Packet Storm

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


USN-4754-1 introduced a regression in Python2.7.

Software Description:
– python2.7: An interactive high-level object-oriented language


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.


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