{"id":"USN-4973-2","summary":"python3.8 vulnerability","details":"USN-4973-1 fixed this vulnerability previously, but it was re-introduced\nin python3.8 in focal because of the SRU in LP: #1928057. This update fixes\nthe problem.\n\nOriginal advisory details:\n\n It was discovered that the Python stdlib ipaddress API incorrectly handled\n octal strings. A remote attacker could possibly use this issue to perform a\n wide variety of attacks, including bypassing certain access restrictions.\n","modified":"2026-04-22T10:15:42.293641Z","published":"2021-10-04T12:04:34Z","related":["UBUNTU-CVE-2021-29921"],"upstream":["CVE-2021-29921","UBUNTU-CVE-2021-29921"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4973-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-29921"},{"type":"REPORT","url":"https://launchpad.net/bugs/1945240"}],"affected":[{"package":{"name":"python3.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python3.8@3.8.10-0ubuntu1~20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.10-0ubuntu1~20.04.1"}]}],"versions":["3.8.0-1","3.8.0-2","3.8.0-3","3.8.0-4","3.8.0-5","3.8.1-2ubuntu3","3.8.2~rc1-1ubuntu1","3.8.2-1","3.8.2-1ubuntu1","3.8.2-1ubuntu1.1","3.8.2-1ubuntu1.2","3.8.5-1~20.04","3.8.5-1~20.04.2","3.8.5-1~20.04.3","3.8.10-0ubuntu1~20.04"],"ecosystem_specific":{"binaries":[{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"idle-python3.8"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"libpython3.8"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"libpython3.8-minimal"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"libpython3.8-stdlib"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"libpython3.8-testsuite"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"python3.8"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"python3.8-examples"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"python3.8-full"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"python3.8-minimal"},{"binary_version":"3.8.10-0ubuntu1~20.04.1","binary_name":"python3.8-venv"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4973-2.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-29921"}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}