{"id":"CVE-2016-7068","aliases":["DEBIAN-CVE-2016-7068","DLA-788-1","DLA-798-1","DSA-3763-1","DSA-3764-1","EUVD-2016-7948","GHSA-g832-5583-wc79","MGASA-2017-0033","MGASA-2017-0036","UBUNTU-CVE-2016-7068","openSUSE-SU-2024:11156-1","openSUSE-SU-2024:11157-1"],"status":"published","title":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4...","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.07294,"percentile":0.94406,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-400"],"published":"2017-01-13T00:00:00Z","modified":"2026-10-24T10:30:52Z","fixes":[{"ecosystem":"Debian:12","package":"pdns","fixed_in":["4.0.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pdns","fixed_in":["4.0.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pdns","fixed_in":["4.0.2-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"pdns-recursor","fixed_in":["4.0.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pdns-recursor","fixed_in":["4.0.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pdns-recursor","fixed_in":["4.0.4-1"],"sources":["osv"]},{"ecosystem":"Debian:7","package":"pdns-recursor","fixed_in":["3.3-3+deb7u2"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"pdns-recursor","fixed_in":["3.6.2-2+deb8u3"],"sources":["osv"]},{"ecosystem":"Mageia:5","package":"pdns-recursor","fixed_in":["3.6.4-1.1.mga5"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"pdns-recursor","fixed_in":["3.5.3-1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.2-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.4-1"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3-3+deb7u2"}]}],"versions":["3.3-3","3.3-3+deb7u1"]},{"source":"osv","ecosystem":"Debian:7","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1-4.1+deb7u3"}]}],"versions":["3.1-4","3.1-4.1","3.1-4.1+deb7u1","3.1-4.1+deb7u2"],"bundled":5},{"source":"osv","ecosystem":"Debian:8","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.2-2+deb8u3"}]}],"versions":["3.6.2-2","3.6.2-2+deb8u1","3.6.2-2+deb8u1~bpo70+1","3.6.2-2+deb8u2","3.6.2-2+deb8u2~bpo70+1"]},{"source":"osv","ecosystem":"Debian:8","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.1-4+deb8u7"}]}],"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","3.4.1-4+deb8u6"],"bundled":5},{"source":"osv","ecosystem":"Mageia:5","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.3-1.3.mga5"}]}],"bundled":5},{"source":"osv","ecosystem":"Mageia:5","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.4-1.1.mga5"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-1ubuntu0.1"}]}],"versions":["3.3-3","3.5.3-1"]},{"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":"Ubuntu:Pro:16.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.7.3-1","4.0.0~alpha1-1","4.0.0~alpha1-2","4.0.0~alpha2-2","4.0.0~alpha2-2ubuntu0.1","4.0.0~alpha2-2ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pdns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1-1.5"}]}],"bundled":16},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.5-1.3"}]}],"bundled":18}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"debian","product":"pdns"},{"vendor":"open-xchange","product":"pdns"},{"vendor":"powerdns","product":"authoritative"},{"vendor":"powerdns","product":"recursor"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://www.debian.org/security/2017/dsa-3764","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://www.debian.org/security/2017/dsa-3763","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-7068"},{"url":"https://github.com/advisories/GHSA-g832-5583-wc79"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-7068","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2017-0033.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=20126","tags":["report"]},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/","tags":["web"]},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/","tags":["web"]},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/","tags":["web"]},{"url":"https://advisories.mageia.org/MGASA-2017-0036.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=20127","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-7068","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-7068","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2006-2069","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-3337","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2120","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7068","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7072","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7073","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15091","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1046","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10851","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-14626","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-10162","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-10163","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-10203","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3871","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-17482","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-36754","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15090","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15092","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15093","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15094","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1000003","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-14644","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16855","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3806","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3807","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10030","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10995","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-12244","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14196","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25829","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2016-7068","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:00:00Z","modified":"2024-08-06T01:50:47.232Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:33:36.483151Z"}],"euvd":[{"id":"EUVD-2016-7948","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:00:00Z","modified":"2024-08-06T01:50:47Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T02:22:34.032839Z"}],"ghsa":[{"id":"GHSA-g832-5583-wc79","title":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4...","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2022-05-13T01:38:41Z","modified":"2023-02-01T05:08:54Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:50:53.268012Z"}],"nvd":[{"id":"CVE-2016-7068","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:29:00.713Z","modified":"2026-06-17T00:52:31.983Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20","CWE-400"],"updated_at":"2026-11-02T14:03:39.621168Z"}],"osv":[{"id":"CVE-2016-7068","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:29:00.713Z","modified":"2026-10-24T10:30:52.528124435Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:02.776224Z"},{"id":"DEBIAN-CVE-2016-7068","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:29:00.713Z","modified":"2026-09-22T07:00:27.999929675Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:27.910042Z"},{"id":"UBUNTU-CVE-2016-7068","description":"An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.","status":"published","published":"2018-09-11T13:29:00Z","modified":"2025-09-08T16:43:50Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.642042Z"},{"id":"DLA-788-1","title":"pdns-recursor - security update","status":"published","published":"2017-01-16T00:00:00Z","modified":"2026-03-09T02:11:33.46531Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"DLA-798-1","title":"pdns - security update","status":"published","published":"2017-01-25T00:00:00Z","modified":"2026-03-09T02:10:24.327657Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"DSA-3763-1","title":"pdns-recursor - security update","status":"published","published":"2017-01-13T00:00:00Z","modified":"2026-03-09T01:22:38.74503Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"DSA-3764-1","title":"pdns - security update","status":"published","published":"2017-01-13T00:00:00Z","modified":"2026-03-09T01:23:38.424677Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"MGASA-2017-0033","title":"Updated pdns packages fix security vulnerabilities","description":"Mathieu Lafon discovered that pdns does not properly validate records\nin zones. An authorized user can take advantage of this flaw to crash\nserver by inserting a specially crafted record in a zone under their\ncontrol and then sending a DNS query for that record (CVE-2016-2120).\n\nFlorian Heinz and Martin Kluge reported that pdns parses all records\npresent in a query regardless of whether they are needed or even\nlegitimate, allowing a remote, unauthenticated attacker to cause an\nabnormal CPU usage load on the pdns server, resulting in a partial\ndenial of service if the system becomes overloaded (CVE-2016-7068).\n\nMongo discovered that the webserver in pdns is susceptible to a\ndenial-of-service vulnerability. A remote, unauthenticated attacker to\ncause a denial of service by opening a large number of f TCP\nconnections to the web server (CVE-2016-7072).\n\nMongo discovered that pdns does not sufficiently validate TSIG\nsignatures, allowing an attacker in position of man-in-the-middle to\nalter the content of an AXFR (CVE-2016-7073, CVE-2016-7074).\n","status":"published","published":"2017-02-02T08:11:52Z","modified":"2026-04-16T06:23:45.973195639Z","updated_at":"2026-11-02T15:49:40.103088Z"},{"id":"MGASA-2017-0036","title":"Updated pdns-recursor packages fix security vulnerability","description":"Florian Heinz and Martin Kluge reported that pdns-recursor parses all\nrecords present in a query regardless of whether they are needed or even\nlegitimate, allowing a remote, unauthenticated attacker to cause an\nabnormal CPU usage load on the pdns server, resulting in a partial\ndenial of service if the system becomes overloaded (CVE-2016-7068).\n","status":"published","published":"2017-02-02T19:17:14Z","modified":"2026-04-16T06:23:18.791660121Z","updated_at":"2026-11-02T15:49:40.103088Z"},{"id":"openSUSE-SU-2024:11156-1","title":"pdns-4.5.1-1.5 on GA media","description":"These are all security issues fixed in the pdns-4.5.1-1.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:39:47.285231Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"openSUSE-SU-2024:11157-1","title":"pdns-recursor-4.5.5-1.3 on GA media","description":"These are all security issues fixed in the pdns-recursor-4.5.5-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:57:58.848357Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}