{"id":"USN-4374-1","summary":"unbound vulnerabilities","details":"Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Unbound\nincorrectly handled certain queries. A remote attacker could use this issue\nto perform an amplification attack directed at a target. (CVE-2020-12662)\n\nIt was discovered that Unbound incorrectly handled certain malformed\nanswers. A remote attacker could possibly use this issue to cause Unbound\nto crash, resulting in a denial of service. (CVE-2020-12663)\n","modified":"2026-04-27T15:37:14.665648Z","published":"2020-05-27T15:19:10Z","related":["UBUNTU-CVE-2020-12662","UBUNTU-CVE-2020-12663"],"upstream":["CVE-2020-12662","CVE-2020-12663","UBUNTU-CVE-2020-12662","UBUNTU-CVE-2020-12663"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4374-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12662"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12663"}],"affected":[{"package":{"name":"unbound","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.6.7-1ubuntu2.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.7-1ubuntu2.3"}]}],"versions":["1.6.5-1","1.6.7-1","1.6.7-1build1","1.6.7-1ubuntu1","1.6.7-1ubuntu2","1.6.7-1ubuntu2.1","1.6.7-1ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"libunbound2"},{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"python-unbound"},{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"python3-unbound"},{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"unbound"},{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"unbound-anchor"},{"binary_version":"1.6.7-1ubuntu2.3","binary_name":"unbound-host"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-12662"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-12663"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4374-1.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-2ubuntu1.1"}]}],"versions":["1.9.0-2ubuntu1","1.9.0-2ubuntu2","1.9.4-2","1.9.4-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"libunbound8"},{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"python-unbound"},{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"python3-unbound"},{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"unbound"},{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"unbound-anchor"},{"binary_version":"1.9.4-2ubuntu1.1","binary_name":"unbound-host"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-12662"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-12663"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4374-1.json"}}],"schema_version":"1.7.5"}