========================================================================= Ubuntu Security Notice USN-4754-1 February 25, 2021 python2.7, python3.4, python3.5, python3.6, python3.8 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM Summary: Python could be made to execute arbitrary code or denial of service if it received a specially crafted input. Software Description: - python3.8: Interactive high-level object-oriented language (version 3.8) - python2.7: An interactive high-level object-oriented language - python3.6: An interactive high-level object-oriented language - python3.5: An interactive high-level object-oriented language - python3.4: An interactive high-level object-oriented language 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 20.10: python3.8 3.8.6-1ubuntu0.2 python3.8-minimal 3.8.6-1ubuntu0.2 Ubuntu 20.04 LTS: python3.8 3.8.5-1~20.04.2 python3.8-minimal 3.8.5-1~20.04.2 Ubuntu 18.04 LTS: python2.7 2.7.17-1~18.04ubuntu1.3 python2.7-minimal 2.7.17-1~18.04ubuntu1.3 python3.6 3.6.9-1~18.04ubuntu1.4 python3.6-minimal 3.6.9-1~18.04ubuntu1.4 Ubuntu 16.04 LTS: python2.7 2.7.12-1ubuntu0~16.04.14 python2.7-minimal 2.7.12-1ubuntu0~16.04.14 python3.5 3.5.2-2ubuntu0~16.04.13 python3.5-minimal 3.5.2-2ubuntu0~16.04.13 Ubuntu 14.04 ESM: python2.7 2.7.6-8ubuntu0.6+esm8 python2.7-minimal 2.7.6-8ubuntu0.6+esm8 python3.4 3.4.3-1ubuntu1~14.04.7+esm10 python3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm10 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4754-1 CVE-2020-27619, CVE-2021-3177 Package Information: https://launchpad.net/ubuntu/+source/python3.8/3.8.6-1ubuntu0.2 https://launchpad.net/ubuntu/+source/python3.8/3.8.5-1~20.04.2 https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.3 https://launchpad.net/ubuntu/+source/python3.6/3.6.9-1~18.04ubuntu1.4 https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.14 https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.13