{"id":"UBUNTU-CVE-2021-36754","details":"PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.","modified":"2026-01-30T02:32:59.425115Z","published":"2021-07-30T14:15:00Z","withdrawn":"2025-06-23T15:54:04Z","related":["CVE-2021-36754"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-36754"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2021/07/26/2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-36754"}],"affected":[{"package":{"name":"pdns","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.5-1build2","3.4.6-2","3.4.6-3","3.4.7-1","3.4.7-2","4.0.0~alpha1-1","4.0.0~alpha2-2","4.0.0~alpha2-3","4.0.0~alpha2-3build1"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}},{"package":{"name":"pdns","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.4-2","4.0.4-2build1","4.0.5-1","4.1.0-1","4.1.0-2","4.1.0-2build1","4.1.1-1"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}},{"package":{"name":"pdns","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.6-3build1","4.2.0-1","4.2.1-1","4.2.1-1build1","4.2.1-1build2"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}},{"package":{"name":"pdns","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.1-1build1","4.4.1-3","4.4.1-4","4.5.2-1build1","4.5.3-1"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}},{"package":{"name":"pdns","ecosystem":"Ubuntu:24.10","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=oracular"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.3-4build3","4.9.0-2","4.9.1-1","4.9.1-2","4.9.1-3"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}},{"package":{"name":"pdns","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pdns?arch=src?distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-1build1","4.8.3-2","4.8.3-2build1","4.8.3-3","4.8.3-4","4.8.3-4build2","4.8.3-4build3"],"ecosystem_specific":{"ubuntu_priority":"low"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36754.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}