USN-5342-1 fixed several vulnerabilities in Python. This update provides the corresponding fix for CVE-2021-3426 for Ubuntu 18.04 ESM.
Original advisory details:
David Schwörer discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)
It was discovered that Python incorrectly handled certain FTP requests. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS. (CVE-2021-4189)
It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0391)
3.7.5-2ubuntu1~18.04.2+esm1