{"id":"USN-7855-2","summary":"unbound regression","details":"USN-7855-1 fixed vulnerabilities in Unbound. It was discovered that the fix\nfor CVE-2025-11411 was incomplete. This update fixes the problem.\n\nOriginal advisory details:\n\n Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin Duan discovered that\n Unbound incorrectly handled certain promiscuous NS RRSets. A remote\n attacker could possibly use this issue to perform a domain hijack attack.","modified":"2026-04-27T18:25:53.836478Z","published":"2025-12-02T13:15:02Z","related":["UBUNTU-CVE-2025-11411"],"upstream":["CVE-2025-11411","UBUNTU-CVE-2025-11411"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7855-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-11411"},{"type":"REPORT","url":"https://launchpad.net/bugs/2133715"}],"affected":[{"package":{"name":"unbound","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.14?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.1-1ubuntu5.14"}]}],"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","1.13.1-1ubuntu5.5","1.13.1-1ubuntu5.7","1.13.1-1ubuntu5.8","1.13.1-1ubuntu5.10","1.13.1-1ubuntu5.11","1.13.1-1ubuntu5.12","1.13.1-1ubuntu5.13"],"ecosystem_specific":{"binaries":[{"binary_name":"libunbound8","binary_version":"1.13.1-1ubuntu5.14"},{"binary_name":"python3-unbound","binary_version":"1.13.1-1ubuntu5.14"},{"binary_name":"unbound","binary_version":"1.13.1-1ubuntu5.14"},{"binary_name":"unbound-anchor","binary_version":"1.13.1-1ubuntu5.14"},{"binary_version":"1.13.1-1ubuntu5.14","binary_name":"unbound-host"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-11411","severity":[{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:H/E:P","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7855-2.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/unbound@1.19.2-1ubuntu3.7?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.2-1ubuntu3.7"}]}],"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","1.19.2-1ubuntu3.1","1.19.2-1ubuntu3.2","1.19.2-1ubuntu3.3","1.19.2-1ubuntu3.4","1.19.2-1ubuntu3.5","1.19.2-1ubuntu3.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libunbound8","binary_version":"1.19.2-1ubuntu3.7"},{"binary_name":"python3-unbound","binary_version":"1.19.2-1ubuntu3.7"},{"binary_name":"unbound","binary_version":"1.19.2-1ubuntu3.7"},{"binary_name":"unbound-anchor","binary_version":"1.19.2-1ubuntu3.7"},{"binary_name":"unbound-host","binary_version":"1.19.2-1ubuntu3.7"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-11411","severity":[{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:H/E:P","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7855-2.json"}},{"package":{"name":"unbound","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/unbound@1.22.0-2ubuntu2.2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.0-2ubuntu2.2"}]}],"versions":["1.22.0-1ubuntu1","1.22.0-2ubuntu1","1.22.0-2ubuntu2","1.22.0-2ubuntu2.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.22.0-2ubuntu2.2","binary_name":"libunbound8"},{"binary_name":"python3-unbound","binary_version":"1.22.0-2ubuntu2.2"},{"binary_version":"1.22.0-2ubuntu2.2","binary_name":"unbound"},{"binary_version":"1.22.0-2ubuntu2.2","binary_name":"unbound-anchor"},{"binary_name":"unbound-host","binary_version":"1.22.0-2ubuntu2.2"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-11411","severity":[{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:H/E:P","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:25.10"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7855-2.json"}}],"schema_version":"1.7.5"}