{"id":"USN-5732-1","summary":"unbound vulnerability","details":"It was discovered that Unbound incorrectly handled delegations with a large\nnumber of non-responsive nameservers. A remote attacker could possibly use\nthis issue to cause Unbound to consume resources, leading to a denial of\nservice.\n","modified":"2026-02-10T04:42:50Z","published":"2022-11-17T17:38:45Z","related":["UBUNTU-CVE-2022-3204"],"upstream":["CVE-2022-3204","UBUNTU-CVE-2022-3204"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5732-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-3204"}],"affected":[{"package":{"name":"unbound","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.6.7-1ubuntu2.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.7-1ubuntu2.6"}]}],"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","1.6.7-1ubuntu2.3","1.6.7-1ubuntu2.4","1.6.7-1ubuntu2.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound-dev","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"libunbound2","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"python-unbound","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"python3-unbound","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"unbound","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"unbound-anchor","binary_version":"1.6.7-1ubuntu2.6"},{"binary_name":"unbound-host","binary_version":"1.6.7-1ubuntu2.6"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2022-3204","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":"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"}]}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-2ubuntu1.4"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound-dev","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"libunbound8","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"python-unbound","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"python3-unbound","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"unbound","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"unbound-anchor","binary_version":"1.9.4-2ubuntu1.4"},{"binary_name":"unbound-host","binary_version":"1.9.4-2ubuntu1.4"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2022-3204","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":"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"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.1-1ubuntu5.3"}]}],"versions":["1.13.1-1ubuntu1","1.13.1-1ubuntu3","1.13.1-1ubuntu5","1.13.1-1ubuntu5.1","1.13.1-1ubuntu5.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound-dev","binary_version":"1.13.1-1ubuntu5.3"},{"binary_name":"libunbound8","binary_version":"1.13.1-1ubuntu5.3"},{"binary_name":"python3-unbound","binary_version":"1.13.1-1ubuntu5.3"},{"binary_name":"unbound","binary_version":"1.13.1-1ubuntu5.3"},{"binary_name":"unbound-anchor","binary_version":"1.13.1-1ubuntu5.3"},{"binary_name":"unbound-host","binary_version":"1.13.1-1ubuntu5.3"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2022-3204","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":"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"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"}}],"schema_version":"1.7.3"}