{"id":"CVE-2020-12244","aliases":["ALPINE-CVE-2020-12244","DEBIAN-CVE-2020-12244","DSA-4691-1","EUVD-2020-4559","GHSA-52f2-92w4-mx97","MGASA-2020-0223","UBUNTU-CVE-2020-12244","openSUSE-SU-2020:0698-1","openSUSE-SU-2024:11157-1"],"status":"published","title":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer...","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.02427,"percentile":0.84456,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-347"],"published":"2020-05-19T12:00:00Z","modified":"2026-11-03T06:31:40Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"pdns-recursor","fixed_in":["4.1.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"pdns-recursor","fixed_in":["4.2.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"pdns-recursor","fixed_in":["4.3.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"pdns-recursor","fixed_in":["4.1.16-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"pdns-recursor","fixed_in":["4.3.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pdns-recursor","fixed_in":["4.3.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pdns-recursor","fixed_in":["4.3.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.16-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.16-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.1-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.11-1+deb10u1"}]}],"versions":["4.1.11-1"],"bundled":2},{"source":"osv","ecosystem":"Mageia:7","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.16-1.mga7"}]}],"bundled":2},{"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":"Ubuntu:Pro:18.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.6-1","4.0.6-1build1","4.0.7-1","4.1.1-1","4.1.1-1build1","4.1.1-2","4.1.1-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.0-6","4.2.1-1","4.2.1-1build1","4.2.1-1build2","4.2.1-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"SUSE:Package Hub 12 SP1","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.12-bp151.4.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.12-bp151.4.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.12-bp151.4.3.1"}]}],"bundled":3},{"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":"fedoraproject","product":"fedora"},{"vendor":"opensuse","product":"backports_sle"},{"vendor":"opensuse","product":"leap"},{"vendor":"powerdns","product":"recursor"}],"references":[{"url":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2020/05/19/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2020/dsa-4691","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12244"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/"},{"url":"https://github.com/advisories/GHSA-52f2-92w4-mx97"},{"url":"https://security.alpinelinux.org/vuln/CVE-2020-12244","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-12244","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0223.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=26645","tags":["report"]},{"url":"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html","tags":["advisory"]},{"url":"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html","tags":["advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2020/05/19/3","tags":["web","report"]},{"url":"https://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.16","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-12244","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-12244","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LEZPG4GM5KFH6L7EPATOSNLDHKRJP667/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1171553","tags":["report"]},{"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":"","tags":["advisory"]},{"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-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-2018-10851","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-14626","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-2020-14196","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25829","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T13:51:39Z","modified":"2024-08-04T11:48:58.374Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-4559","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T13:51:39Z","modified":"2024-08-04T11:48:58Z","updated_at":"2026-11-03T03:07:40.81889Z"}],"ghsa":[{"id":"GHSA-52f2-92w4-mx97","title":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer...","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2022-05-24T17:18:07Z","modified":"2023-01-29T05:02:34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-20","CWE-347"],"updated_at":"2026-11-02T14:45:07.130995Z"}],"nvd":[{"id":"CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T14:15:11.097Z","modified":"2026-06-17T02:51:30.117Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:06:00.784809Z"}],"osv":[{"id":"ALPINE-CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T14:15:11.097Z","modified":"2026-11-03T06:31:40.150549045Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-03T07:18:15.355745Z"},{"id":"CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T14:15:11.097Z","modified":"2026-10-24T10:30:51.729696653Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"DEBIAN-CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T14:15:11.097Z","modified":"2026-10-26T12:02:25.356920135Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:32.862554Z"},{"id":"UBUNTU-CVE-2020-12244","description":"An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.","status":"published","published":"2020-05-19T12:00:00Z","modified":"2025-09-08T16:46:05Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:22.804634Z"},{"id":"DSA-4691-1","title":"pdns-recursor - security update","status":"published","published":"2020-05-21T00:00:00Z","modified":"2026-03-09T02:09:27.962792Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0223","title":"Updated pdns-recursor packages fix security vulnerabilities","description":"Updated pdns-recursor packages fix security vulnerabilities:\n\nAn issue in the DNS protocol has been found that allow malicious parties\nto use recursive DNS services to attack third party authoritative name\nservers. The attack uses a crafted reply by an authoritative name server\nto amplify the resulting traffic between the recursive and other\nauthoritative name servers. Both types of service can suffer degraded\nperformance as an effect (CVE-2020-10995).\n\nAn issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where\nrecords in the answer section of a NXDOMAIN response lacking an SOA were\nnot properly validated in SyncRes::processAnswer. This would allow an\nattacker in position of man-in-the-middle to send a NXDOMAIN answer for\na name that does exist, bypassing DNSSEC validation (CVE-2020-12244).\n","status":"published","published":"2020-05-24T18:04:47Z","modified":"2026-04-16T04:44:48.011878964Z","updated_at":"2026-11-02T15:49:41.151324Z"},{"id":"openSUSE-SU-2020:0698-1","title":"Security update for pdns-recursor","description":"This update for pdns-recursor fixes the following issues:\n\n- update to 4.1.16\n  * fixes an issue where records in the answer section of\n    a NXDOMAIN response lacking an SOA were not properly validated\n    (CVE-2020-12244, boo#1171553)\n  * fixes an issue where invalid hostname on the server can result in\n    disclosure of invalid memory (CVE-2020-10030, boo#1171553)\n  * fixes an issue in the DNS protocol has been found that allows\n    malicious parties to use recursive DNS services to attack third\n    party authoritative name servers (CVE-2020-10995, boo#1171553)\n\nFor details see\nhttps://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.16\n\n","status":"published","published":"2020-05-23T07:22:00Z","modified":"2026-02-04T02:48:32.953843Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"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"}]}}