{"id":"USN-4754-1","summary":"python2.7, python3.4, python3.5, python3.6, python3.8 vulnerabilities","details":"It was discovered that Python incorrectly handled certain inputs.\nAn attacker could possibly use this issue to execute arbitrary code\nor cause a denial of service. (CVE-2020-27619, CVE-2021-3177)\n","modified":"2026-02-10T04:42:05Z","published":"2021-02-25T12:05:23Z","related":["UBUNTU-CVE-2020-27619","UBUNTU-CVE-2021-3177"],"upstream":["CVE-2020-27619","CVE-2021-3177","UBUNTU-CVE-2020-27619","UBUNTU-CVE-2021-3177"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4754-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-27619"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3177"}],"affected":[{"package":{"name":"python2.7","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python2.7@2.7.6-8ubuntu0.6+esm8?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-8ubuntu0.6+esm8"}]}],"versions":["2.7.5-8ubuntu3","2.7.5-8ubuntu4","2.7.6-2","2.7.6-2ubuntu1","2.7.6-3","2.7.6-3ubuntu1","2.7.6-4","2.7.6-4ubuntu1","2.7.6-5","2.7.6-7","2.7.6-8","2.7.6-8ubuntu0.2","2.7.6-8ubuntu0.3","2.7.6-8ubuntu0.4","2.7.6-8ubuntu0.5","2.7.6-8ubuntu0.6+esm2","2.7.6-8ubuntu0.6+esm3","2.7.6-8ubuntu0.6+esm5","2.7.6-8ubuntu0.6+esm6","2.7.6-8ubuntu0.6+esm7"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"idle-python2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"libpython2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"libpython2.7-dev"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"libpython2.7-minimal"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"libpython2.7-stdlib"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"libpython2.7-testsuite"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"python2.7"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"python2.7-dev"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"python2.7-examples"},{"binary_version":"2.7.6-8ubuntu0.6+esm8","binary_name":"python2.7-minimal"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}},{"package":{"name":"python3.4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python3.4@3.4.3-1ubuntu1~14.04.7+esm10?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.3-1ubuntu1~14.04.7+esm10"}]}],"versions":["3.4~b1-0ubuntu3","3.4~b1-4ubuntu4","3.4~b1-4ubuntu6","3.4~b1-5ubuntu2","3.4~b2-1","3.4~b3-1ubuntu1","3.4~rc1-1build1","3.4~rc2-1","3.4~rc3-0ubuntu1","3.4.0-1","3.4.0-2ubuntu1","3.4.0-2ubuntu1.1","3.4.3-1ubuntu1~14.04.1","3.4.3-1ubuntu1~14.04.3","3.4.3-1ubuntu1~14.04.4","3.4.3-1ubuntu1~14.04.5","3.4.3-1ubuntu1~14.04.6","3.4.3-1ubuntu1~14.04.7","3.4.3-1ubuntu1~14.04.7+esm2","3.4.3-1ubuntu1~14.04.7+esm4","3.4.3-1ubuntu1~14.04.7+esm6","3.4.3-1ubuntu1~14.04.7+esm7","3.4.3-1ubuntu1~14.04.7+esm8"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"idle-python3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"libpython3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"libpython3.4-dev"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"libpython3.4-minimal"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"libpython3.4-stdlib"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"libpython3.4-testsuite"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"python3.4"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"python3.4-dev"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"python3.4-examples"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"python3.4-minimal"},{"binary_version":"3.4.3-1ubuntu1~14.04.7+esm10","binary_name":"python3.4-venv"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}},{"package":{"name":"python2.7","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python2.7@2.7.12-1ubuntu0~16.04.14?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.12-1ubuntu0~16.04.14"}]}],"versions":["2.7.10-4ubuntu1","2.7.10-4ubuntu2","2.7.11-2","2.7.11-3","2.7.11-4","2.7.11-6","2.7.11-7","2.7.11-7ubuntu1","2.7.12-1~16.04","2.7.12-1ubuntu0~16.04.1","2.7.12-1ubuntu0~16.04.2","2.7.12-1ubuntu0~16.04.3","2.7.12-1ubuntu0~16.04.4","2.7.12-1ubuntu0~16.04.8","2.7.12-1ubuntu0~16.04.9","2.7.12-1ubuntu0~16.04.11","2.7.12-1ubuntu0~16.04.12","2.7.12-1ubuntu0~16.04.13"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"idle-python2.7"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"libpython2.7"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"libpython2.7-dev"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"libpython2.7-minimal"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"libpython2.7-stdlib"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"libpython2.7-testsuite"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"python2.7"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"python2.7-dev"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"python2.7-examples"},{"binary_version":"2.7.12-1ubuntu0~16.04.14","binary_name":"python2.7-minimal"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:16.04:LTS"}}},{"package":{"name":"python3.5","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python3.5@3.5.2-2ubuntu0~16.04.13?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-2ubuntu0~16.04.13"}]}],"versions":["3.5.0-3","3.5.0-3ubuntu1","3.5.1~rc1-2ubuntu1","3.5.1-1","3.5.1-2","3.5.1-3","3.5.1-5","3.5.1-6ubuntu1","3.5.1-6ubuntu2","3.5.1-9ubuntu1","3.5.1-10","3.5.2-2~16.01","3.5.2-2~16.04","3.5.2-2ubuntu0~16.04.1","3.5.2-2ubuntu0~16.04.2","3.5.2-2ubuntu0~16.04.3","3.5.2-2ubuntu0~16.04.4","3.5.2-2ubuntu0~16.04.5","3.5.2-2ubuntu0~16.04.8","3.5.2-2ubuntu0~16.04.9","3.5.2-2ubuntu0~16.04.10","3.5.2-2ubuntu0~16.04.11","3.5.2-2ubuntu0~16.04.12"],"ecosystem_specific":{"binaries":[{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"idle-python3.5"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"libpython3.5"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"libpython3.5-dev"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"libpython3.5-minimal"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"libpython3.5-stdlib"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"libpython3.5-testsuite"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"python3.5"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"python3.5-dev"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"python3.5-examples"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"python3.5-minimal"},{"binary_version":"3.5.2-2ubuntu0~16.04.13","binary_name":"python3.5-venv"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:16.04:LTS"}}},{"package":{"name":"python2.7","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python2.7@2.7.17-1~18.04ubuntu1.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.17-1~18.04ubuntu1.3"}]}],"versions":["2.7.14-2ubuntu2","2.7.14-4","2.7.14-6","2.7.14-7","2.7.14-8","2.7.15~rc1-1","2.7.15~rc1-1ubuntu0.1","2.7.15-4ubuntu4~18.04","2.7.15-4ubuntu4~18.04.1","2.7.15-4ubuntu4~18.04.2","2.7.17-1~18.04","2.7.17-1~18.04ubuntu1","2.7.17-1~18.04ubuntu1.1","2.7.17-1~18.04ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"idle-python2.7"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"libpython2.7"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"libpython2.7-dev"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"libpython2.7-minimal"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"libpython2.7-stdlib"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"libpython2.7-testsuite"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"python2.7"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"python2.7-dev"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"python2.7-examples"},{"binary_version":"2.7.17-1~18.04ubuntu1.3","binary_name":"python2.7-minimal"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"python3.6","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python3.6@3.6.9-1~18.04ubuntu1.4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.9-1~18.04ubuntu1.4"}]}],"versions":["3.6.3-1ubuntu1","3.6.4~rc1-1","3.6.4~rc1-2","3.6.4-1","3.6.4-2","3.6.4-3build1","3.6.4-4","3.6.5~rc1-1","3.6.5-3","3.6.6-1~18.04","3.6.7-1~18.04","3.6.8-1~18.04.1","3.6.8-1~18.04.2","3.6.8-1~18.04.3","3.6.9-1~18.04","3.6.9-1~18.04ubuntu1","3.6.9-1~18.04ubuntu1.1","3.6.9-1~18.04ubuntu1.3"],"ecosystem_specific":{"binaries":[{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"idle-python3.6"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"libpython3.6"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"libpython3.6-dev"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"libpython3.6-minimal"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"libpython3.6-stdlib"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"libpython3.6-testsuite"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"python3.6"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"python3.6-dev"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"python3.6-examples"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"python3.6-minimal"},{"binary_version":"3.6.9-1~18.04ubuntu1.4","binary_name":"python3.6-venv"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"python3.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python3.8@3.8.5-1~20.04.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.5-1~20.04.2"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"3.8.5-1~20.04.2","binary_name":"idle-python3.8"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"libpython3.8"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"libpython3.8-dev"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"libpython3.8-minimal"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"libpython3.8-stdlib"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"libpython3.8-testsuite"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"python3.8"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"python3.8-dev"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"python3.8-examples"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"python3.8-minimal"},{"binary_version":"3.8.5-1~20.04.2","binary_name":"python3.8-venv"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-1.json","cves_map":{"cves":[{"id":"CVE-2020-27619","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-3177","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.3"}