========================================================================== Ubuntu Security Notice USN-3817-1 November 13, 2018 python2.7, python3.4, python3.5 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Python. Software Description: - python2.7: 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 large amounts of data. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1000030) It was discovered that Python incorrectly handled running external commands in the shutil module. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000802) It was discovered that Python incorrectly used regular expressions vulnerable to catastrophic backtracking. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1060, CVE-2018-1061) It was discovered that Python failed to initialize Expat's hash salt. A remote attacker could possibly use this issue to cause hash collisions, leading to a denial of service. (CVE-2018-14647) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: python2.7 2.7.15~rc1-1ubuntu0.1 python2.7-minimal 2.7.15~rc1-1ubuntu0.1 Ubuntu 16.04 LTS: python2.7 2.7.12-1ubuntu0~16.04.4 python2.7-minimal 2.7.12-1ubuntu0~16.04.4 python3.5 3.5.2-2ubuntu0~16.04.5 python3.5-minimal 3.5.2-2ubuntu0~16.04.5 Ubuntu 14.04 LTS: python2.7 2.7.6-8ubuntu0.5 python2.7-minimal 2.7.6-8ubuntu0.5 python3.4 3.4.3-1ubuntu1~14.04.7 python3.4-minimal 3.4.3-1ubuntu1~14.04.7 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3817-1 CVE-2018-1000030, CVE-2018-1000802, CVE-2018-1060, CVE-2018-1061, CVE-2018-14647 Package Information: https://launchpad.net/ubuntu/+source/python2.7/2.7.15~rc1-1ubuntu0.1 https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.4 https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.5 https://launchpad.net/ubuntu/+source/python2.7/2.7.6-8ubuntu0.5 https://launchpad.net/ubuntu/+source/python3.4/3.4.3-1ubuntu1~14.04.7