==========================================================================
Ubuntu Security Notice USN-5888-1
February 27, 2023

python3.9 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Python.

Software Description:
- python3.9: An interactive high-level object-oriented language

Details:

It was discovered that Python incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially
crafted input file, a remote attacker could possibly use this issue to
execute arbitrary code. (CVE-2015-20107)

Hamza Avvan discovered that Python incorrectly handled certain inputs. If a
user or an automated system were tricked into running a specially
crafted input, a remote attacker could possibly use this issue to execute
arbitrary code. (CVE-2021-28861)

It was discovered that Python incorrectly handled certain inputs. If a
user or an automated system were tricked into running a specially
crafted input, a remote attacker could possibly use this issue to execute
arbitrary code. (CVE-2022-37454, CVE-2022-42919)

It was discovered that Python incorrectly handled certain inputs. If a
user or an automated system were tricked into running a specially
crafted input, a remote attacker could possibly use this issue to cause a
denial of service. (CVE-2022-45061, CVE-2023-24329)

Update instructions:

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

Ubuntu 20.04 LTS:
   python3.9                       3.9.5-3ubuntu0~20.04.1+esm1
   python3.9-minimal               3.9.5-3ubuntu0~20.04.1+esm1

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

References:
https://ubuntu.com/security/notices/USN-5888-1 
<https://ubuntu.com/security/notices/USN-5888-1>
   CVE-2015-20107, CVE-2021-28861, CVE-2022-37454, CVE-2022-42919,
   CVE-2022-45061, CVE-2023-24329

Package Information:
https://launchpad.net/ubuntu/+source/python3.9/3.9.5-3ubuntu0~20.04.1+esm1 
<https://launchpad.net/ubuntu/+source/python3.9/3.9.5-3ubuntu0~20.04.1+esm1>