{"id":"CVE-2016-6172","aliases":["DEBIAN-CVE-2016-6172","DLA-627-1","DSA-3664-1","EUVD-2016-7106","GHSA-fr33-w8fm-p45j","MGASA-2016-0324","UBUNTU-CVE-2016-6172","openSUSE-SU-2024:10136-1","openSUSE-SU-2024:10537-1"],"status":"published","title":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause...","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","severity":{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03824,"percentile":0.90146,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2016-09-10T00:00:00Z","modified":"2026-10-20T10:47:31Z","fixes":[{"ecosystem":"Debian:12","package":"pdns","fixed_in":["4.0.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pdns","fixed_in":["4.0.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pdns","fixed_in":["4.0.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-1"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1-4.1+deb7u2"}]}],"versions":["3.1-4","3.1-4.1","3.1-4.1+deb7u1"],"bundled":3},{"source":"osv","ecosystem":"Debian:8","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.1-4+deb8u6"}]}],"versions":["3.4.1-4","3.4.1-4+deb8u1","3.4.1-4+deb8u1~bpo70+1","3.4.1-4+deb8u2","3.4.1-4+deb8u3","3.4.1-4+deb8u4","3.4.1-4+deb8u5"],"bundled":3},{"source":"osv","ecosystem":"Mageia:5","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.3-1.2.mga5"}]}],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"pdns","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","4.0.0~alpha2-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-1.2"}]}],"bundled":4},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.3-1.2"}]}],"bundled":4}],"products":[{"vendor":"opensuse","product":"leap"},{"vendor":"opensuse","product":"opensuse"},{"vendor":"powerdns","product":"authoritative_server"}],"references":[{"url":"https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","advisory"]},{"url":"http://www.debian.org/security/2016/dsa-3664","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://www.securitytracker.com/id/1036242","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/07/06/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","article"]},{"url":"https://github.com/PowerDNS/pdns/issues/4128","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"https://github.com/PowerDNS/pdns/issues/4133","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"http://www.securityfocus.com/bid/91678","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://github.com/PowerDNS/pdns/pull/4134","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/sischkg/xfer-limit/blob/master/README.md","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6172"},{"url":"https://github.com/advisories/GHSA-fr33-w8fm-p45j"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-6172","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2016-0324.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=19166","tags":["report"]},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/WTT7ILQWU5FKY4GLFZV4V7B4VEUXETKL/","tags":["web"]},{"url":"http://lwn.net/Vulnerabilities/700386/","tags":["web"]},{"url":"https://www.debian.org/security/2016/dsa-3664","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2016-6172","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2016/07/06/4","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-6172","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0206","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-1868","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-5230","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6172","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-4009","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8601","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2016-6172","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:00:00Z","modified":"2024-08-06T01:22:20.811Z","updated_at":"2026-11-02T14:33:34.443637Z"}],"euvd":[{"id":"EUVD-2016-7106","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:00:00Z","modified":"2024-08-06T01:22:20Z","updated_at":"2026-11-03T02:22:40.469928Z"}],"ghsa":[{"id":"GHSA-fr33-w8fm-p45j","title":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause...","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2022-05-14T02:08:57Z","modified":"2023-02-02T05:05:12Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:52:03.084435Z"}],"nvd":[{"id":"CVE-2016-6172","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:59:04.947Z","modified":"2026-06-17T00:50:34.583Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:03:31.485755Z"}],"osv":[{"id":"CVE-2016-6172","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:59:04.947Z","modified":"2026-10-20T10:47:31.415024039Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:02.776224Z"},{"id":"DEBIAN-CVE-2016-6172","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:59:04.947Z","modified":"2026-09-22T07:01:45.421778836Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:27.910042Z"},{"id":"UBUNTU-CVE-2016-6172","description":"PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.","status":"published","published":"2016-09-26T16:59:00Z","modified":"2025-09-08T16:43:48Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:12.642042Z"},{"id":"DLA-627-1","title":"pdns - security update","status":"published","published":"2016-09-18T00:00:00Z","modified":"2026-03-09T02:10:31.471153Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"DSA-3664-1","title":"pdns - security update","status":"published","published":"2016-09-10T00:00:00Z","modified":"2026-03-09T01:19:34.60774Z","updated_at":"2026-11-02T15:46:16.199525Z"},{"id":"MGASA-2016-0324","title":"Updated pdns packages fix security vulnerability","description":"PowerDNS Authoritative Server accepts queries with a qname's length larger\nthan 255 bytes (CVE-2016-5426). PowerDNS Authoritative Server does not\nproperly handle dot inside labels (CVE-2016-5427). These issues allow a\nremote, unauthenticated attacker to cause an abnormal load on the PowerDNS\nbackend by sending crafted DNS queries, which might result in a partial\ndenial of service if the backend becomes overloaded.\n\nIt was found that PowerDNS does not implement reasonable restrictions for\nzone sizes. This allows an explicitly configured primary DNS server for a\nzone to crash a secondary DNS server, affecting service of other zones\nhosted on the same secondary server (CVE-2016-6172).\n","status":"published","published":"2016-09-28T05:59:24Z","modified":"2026-04-16T06:25:05.717996401Z","updated_at":"2026-11-02T15:49:40.103088Z"},{"id":"openSUSE-SU-2024:10136-1","title":"pdns-4.0.1-1.2 on GA media","description":"These are all security issues fixed in the pdns-4.0.1-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:33:27.821694Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"openSUSE-SU-2024:10537-1","title":"pdns-recursor-4.0.3-1.2 on GA media","description":"These are all security issues fixed in the pdns-recursor-4.0.3-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:13:09.984599Z","updated_at":"2026-11-02T16:58:34.487567Z"}]}}