{"id":"USN-4247-2","summary":"python-apt regression","details":"USN-4247-1 fixed vulnerabilities in python-apt. The updated packages caused\na regression when attempting to upgrade to a new Ubuntu release. This\nupdate fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that python-apt would still use MD5 hashes to validate\n certain downloaded packages. If a remote attacker were able to perform a\n machine-in-the-middle attack, this flaw could potentially be used to install\n altered packages. (CVE-2019-15795)\n \n It was discovered that python-apt could install packages from untrusted\n repositories, contrary to expectations. (CVE-2019-15796)\n","modified":"2026-04-22T10:01:55.981560Z","published":"2020-01-22T23:11:22Z","references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4247-2"},{"type":"REPORT","url":"https://launchpad.net/bugs/1860606"}],"affected":[{"package":{"name":"python-apt","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-apt@1.1.0~beta1ubuntu0.16.04.8?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0~beta1ubuntu0.16.04.8"}]}],"versions":["1.0.1build1","1.0.1ubuntu2","1.1.0~beta1","1.1.0~beta1build1","1.1.0~beta1ubuntu0.16.04.1","1.1.0~beta1ubuntu0.16.04.2","1.1.0~beta1ubuntu0.16.04.4","1.1.0~beta1ubuntu0.16.04.5","1.1.0~beta1ubuntu0.16.04.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python-apt","binary_version":"1.1.0~beta1ubuntu0.16.04.8"},{"binary_name":"python-apt-common","binary_version":"1.1.0~beta1ubuntu0.16.04.8"},{"binary_name":"python3-apt","binary_version":"1.1.0~beta1ubuntu0.16.04.8"}]},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4247-2.json"}},{"package":{"name":"python-apt","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-apt@1.6.5ubuntu0.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.5ubuntu0.2"}]}],"versions":["1.4.0~beta3build2","1.4.0~beta3ubuntu1","1.6.0~rc2ubuntu1","1.6.0~rc2ubuntu2","1.6.0","1.6.1","1.6.2","1.6.3","1.6.3ubuntu1","1.6.4","1.6.5ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python-apt","binary_version":"1.6.5ubuntu0.2"},{"binary_name":"python-apt-common","binary_version":"1.6.5ubuntu0.2"},{"binary_name":"python3-apt","binary_version":"1.6.5ubuntu0.2"}]},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4247-2.json"}}],"schema_version":"1.7.5"}