{"id":"USN-6791-1","summary":"unbound vulnerability","details":"It was discovered that Unbound could take part in a denial of service\namplification attack known as DNSBomb. This update introduces certain\nresource limits to make the impact from Unbound significantly lower.\n","modified":"2026-04-27T17:15:18.090589Z","published":"2024-05-28T11:34:52Z","related":["UBUNTU-CVE-2024-33655"],"upstream":["CVE-2024-33655","UBUNTU-CVE-2024-33655"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6791-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-33655"}],"affected":[{"package":{"name":"unbound","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.6?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-2ubuntu1.6"}]}],"versions":["1.9.0-2ubuntu1","1.9.0-2ubuntu2","1.9.4-2","1.9.4-2ubuntu1","1.9.4-2ubuntu1.1","1.9.4-2ubuntu1.2","1.9.4-2ubuntu1.3","1.9.4-2ubuntu1.4","1.9.4-2ubuntu1.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound8","binary_version":"1.9.4-2ubuntu1.6"},{"binary_name":"python-unbound","binary_version":"1.9.4-2ubuntu1.6"},{"binary_version":"1.9.4-2ubuntu1.6","binary_name":"python3-unbound"},{"binary_name":"unbound","binary_version":"1.9.4-2ubuntu1.6"},{"binary_name":"unbound-anchor","binary_version":"1.9.4-2ubuntu1.6"},{"binary_name":"unbound-host","binary_version":"1.9.4-2ubuntu1.6"}]},"database_specific":{"cves_map":{"cves":[{"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":"low","type":"Ubuntu"}],"id":"CVE-2024-33655"}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6791-1.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.5?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.1-1ubuntu5.5"}]}],"versions":["1.13.1-1ubuntu1","1.13.1-1ubuntu3","1.13.1-1ubuntu5","1.13.1-1ubuntu5.1","1.13.1-1ubuntu5.2","1.13.1-1ubuntu5.3","1.13.1-1ubuntu5.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound8","binary_version":"1.13.1-1ubuntu5.5"},{"binary_name":"python3-unbound","binary_version":"1.13.1-1ubuntu5.5"},{"binary_name":"unbound","binary_version":"1.13.1-1ubuntu5.5"},{"binary_name":"unbound-anchor","binary_version":"1.13.1-1ubuntu5.5"},{"binary_name":"unbound-host","binary_version":"1.13.1-1ubuntu5.5"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2024-33655","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":"low","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6791-1.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.19.2-1ubuntu3.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.2-1ubuntu3.1"}]}],"versions":["1.17.1-2","1.18.0-2ubuntu1","1.18.0-2ubuntu2","1.19.1-1ubuntu1","1.19.2-1ubuntu1","1.19.2-1ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound8","binary_version":"1.19.2-1ubuntu3.1"},{"binary_name":"python3-unbound","binary_version":"1.19.2-1ubuntu3.1"},{"binary_name":"unbound","binary_version":"1.19.2-1ubuntu3.1"},{"binary_name":"unbound-anchor","binary_version":"1.19.2-1ubuntu3.1"},{"binary_name":"unbound-host","binary_version":"1.19.2-1ubuntu3.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2024-33655","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":"low","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6791-1.json"}}],"schema_version":"1.7.5"}