{"id":"UBUNTU-CVE-2012-1191","details":"The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a \"ghost domain names\" attack.","modified":"2026-05-20T16:03:04.544371372Z","published":"2012-02-17T22:55:00Z","upstream":["CVE-2012-1191"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2012-1191"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2012-1191"}],"affected":[{"package":{"name":"djbdns","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/djbdns?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.05-8ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"dbndns","binary_version":"1:1.05-8ubuntu1"},{"binary_version":"1:1.05-8ubuntu1","binary_name":"djbdns"},{"binary_version":"1:1.05-8ubuntu1","binary_name":"dnscache-run"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"}},{"package":{"name":"djbdns","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/djbdns?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.05-15fakesync1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.05-15fakesync1","binary_name":"axfrdns"},{"binary_version":"1:1.05-15fakesync1","binary_name":"djbdns-conf"},{"binary_name":"djbdns-utils","binary_version":"1:1.05-15fakesync1"},{"binary_version":"1:1.05-15fakesync1","binary_name":"dnscache"},{"binary_name":"rbldns","binary_version":"1:1.05-15fakesync1"},{"binary_name":"tinydns","binary_version":"1:1.05-15fakesync1"},{"binary_version":"1:1.05-15fakesync1","binary_name":"walldns"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"}},{"package":{"name":"djbdns","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/djbdns?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.05-15ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.05-15ubuntu2","binary_name":"axfrdns"},{"binary_name":"djbdns-conf","binary_version":"1:1.05-15ubuntu2"},{"binary_version":"1:1.05-15ubuntu2","binary_name":"djbdns-utils"},{"binary_name":"dnscache","binary_version":"1:1.05-15ubuntu2"},{"binary_name":"rbldns","binary_version":"1:1.05-15ubuntu2"},{"binary_version":"1:1.05-15ubuntu2","binary_name":"tinydns"},{"binary_name":"walldns","binary_version":"1:1.05-15ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"}},{"package":{"name":"djbdns","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/djbdns?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.05-15ubuntu2","1:1.05-22ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"axfrdns","binary_version":"1:1.05-22ubuntu1"},{"binary_name":"djbdns-conf","binary_version":"1:1.05-22ubuntu1"},{"binary_version":"1:1.05-22ubuntu1","binary_name":"djbdns-utils"},{"binary_name":"dnscache","binary_version":"1:1.05-22ubuntu1"},{"binary_name":"rbldns","binary_version":"1:1.05-22ubuntu1"},{"binary_name":"tinydns","binary_version":"1:1.05-22ubuntu1"},{"binary_name":"walldns","binary_version":"1:1.05-22ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"}},{"package":{"name":"djbdns","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/djbdns?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.05-22ubuntu1","1:1.05-22ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"axfrdns","binary_version":"1:1.05-22ubuntu2"},{"binary_version":"1:1.05-22ubuntu2","binary_name":"djbdns-conf"},{"binary_version":"1:1.05-22ubuntu2","binary_name":"djbdns-utils"},{"binary_version":"1:1.05-22ubuntu2","binary_name":"dnscache"},{"binary_name":"rbldns","binary_version":"1:1.05-22ubuntu2"},{"binary_name":"tinydns","binary_version":"1:1.05-22ubuntu2"},{"binary_version":"1:1.05-22ubuntu2","binary_name":"walldns"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}