USN-5083-1: Python vulnerabilities

Published Sep 16, 2021

Updated

It was discovered that Python incorrectly handled certain RFCs. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 ESM. (CVE-2021-3733) It was discovered that Python incorrectly handled certain server responses. An attacker could possibly use this issue to cause a denial of service. (CVE-2021-3737)

Affected Software

1 affected component

Python Software Foundation Python

Event History

May 10, 2025

Advisory Published

via Ubuntu·03:47 AM

Data Sourced

via Ubuntu·03:47 AM

DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

What is the vulnerability ID for this Python vulnerability?

The vulnerability ID for this Python vulnerability is CVE-2021-3733.

What is the severity of the Python vulnerability (CVE-2021-3733)?

The severity of the Python vulnerability (CVE-2021-3733) is not specified.

How does this Python vulnerability (CVE-2021-3733) affect Ubuntu?

This Python vulnerability (CVE-2021-3733) affects Ubuntu 16.04 ESM.

How can this Python vulnerability (CVE-2021-3733) be exploited?

This Python vulnerability (CVE-2021-3733) can be exploited by an attacker to cause a denial of service.

What is the recommended remedy for this Python vulnerability (CVE-2021-3733) on Ubuntu?

The recommended remedy for this Python vulnerability (CVE-2021-3733) on Ubuntu 16.04 ESM is to update to version 3.5.2-2ubuntu0~16.04.13+esm1.