{"id":"UBUNTU-CVE-2016-6171","details":"Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service (memory exhaustion and slave server crash) via a large zone transfer for (1) DDNS, (2) AXFR, or (3) IXFR.","modified":"2026-04-22T10:53:54.607697Z","published":"2017-02-09T15:59:00Z","upstream":["CVE-2016-6171"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-6171"},{"type":"REPORT","url":"https://gitlab.labs.nic.cz/labs/knot/merge_requests/541"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-6171"}],"affected":[{"package":{"name":"knot","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/knot@2.1.1-1build1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-1","2.0.1-4","2.0.1-4build1","2.0.2-1","2.0.2-1build1","2.1.0~rc1-52-gd80ce77-1","2.1.0~rc1-55-gf227348-1","2.1.0-2","2.1.0-3","2.1.1-1","2.1.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"knot","binary_version":"2.1.1-1build1"},{"binary_name":"knot-dnsutils","binary_version":"2.1.1-1build1"},{"binary_name":"knot-host","binary_version":"2.1.1-1build1"},{"binary_name":"libdnssec0","binary_version":"2.1.1-1build1"},{"binary_name":"libknot1","binary_version":"2.1.1-1build1"},{"binary_name":"libzscanner0","binary_version":"2.1.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-6171.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}