{"id":"USN-4718-1","summary":"fastd vulnerability","details":"It was discovered that fastd incorrectly handled certain packets.\nAn attacker could possibly use this issue to cause a denial of service.\n","modified":"2026-02-10T04:42:02Z","published":"2021-02-02T14:09:32Z","related":["UBUNTU-CVE-2020-27638"],"upstream":["CVE-2020-27638","UBUNTU-CVE-2020-27638"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4718-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-27638"}],"affected":[{"package":{"name":"fastd","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/fastd@17-4ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17-4ubuntu0.1"}]}],"versions":["17-4","17-4build1"],"ecosystem_specific":{"binaries":[{"binary_name":"fastd","binary_version":"17-4ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2020-27638","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4718-1.json"}},{"package":{"name":"fastd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/fastd@18-3ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18-3ubuntu0.18.04.1"}]}],"versions":["18-2","18-2ubuntu1","18-2ubuntu2","18-3"],"ecosystem_specific":{"binaries":[{"binary_name":"fastd","binary_version":"18-3ubuntu0.18.04.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-27638","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4718-1.json"}}],"schema_version":"1.7.3"}