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)
2.7.6-8ubuntu0.53.4.3-1ubuntu1~14.04.72.7.12-1ubuntu0~16.04.43.5.2-2ubuntu0~16.04.52.7.15~rc1-1ubuntu0.1