{"id":"CVE-2020-25829","aliases":["ALPINE-CVE-2020-25829","DEBIAN-CVE-2020-25829","DLA-3855-1","EUVD-2020-18463","GHSA-w93h-8xj5-rq44","MGASA-2020-0393","UBUNTU-CVE-2020-25829","openSUSE-SU-2020:1687-1","openSUSE-SU-2024:11157-1"],"status":"published","title":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before...","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.06543,"percentile":0.9386,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2020-10-16T05:07:44Z","modified":"2026-11-03T06:32:24Z","fixes":[{"ecosystem":"Alpine:v3.12","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"pdns-recursor","fixed_in":["4.3.5-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"pdns-recursor","fixed_in":["4.3.5-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pdns-recursor","fixed_in":["4.3.5-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pdns-recursor","fixed_in":["4.3.5-1"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"pdns-recursor","fixed_in":["4.1.18-1.mga7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.11-1+deb10u2"}]}],"versions":["4.1.11-1","4.1.11-1+deb10u1"],"bundled":2},{"source":"osv","ecosystem":"Mageia:7","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.18-1.mga7"}]}]},{"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":"4.3.5-bp152.2.12.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-bp152.2.12.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP2","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-bp152.2.12.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-bp152.2.12.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 15.2","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-bp152.2.12.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.5-1.3"}]}],"bundled":18}],"products":[{"vendor":"opensuse","product":"backports_sle"},{"vendor":"opensuse","product":"leap"},{"vendor":"powerdns","product":"recursor"}],"references":[{"url":"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Third Party Advisory","advisory"]},{"url":"https://security.gentoo.org/glsa/202012-19","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25829"},{"url":"https://github.com/advisories/GHSA-w93h-8xj5-rq44"},{"url":"https://security.alpinelinux.org/vuln/CVE-2020-25829","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-25829","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0393.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=27400","tags":["report"]},{"url":"https://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.18","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-25829","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-25829","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/OXQDFFHHAGOYSWK5Z3277FVZ3QGDWFCG/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1173302","tags":["report"]},{"url":"https://bugzilla.suse.com/1177383","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14196","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25829","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-2020-10030","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"]}],"sources":{"cve":[{"id":"CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T05:07:44Z","modified":"2024-08-04T15:40:36.998Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-18463","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T05:07:44Z","modified":"2024-08-04T15:40:36Z","updated_at":"2026-11-03T03:07:16.74035Z"}],"ghsa":[{"id":"GHSA-w93h-8xj5-rq44","title":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before...","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2022-05-24T17:31:03Z","modified":"2023-01-27T05:02:31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:42:03.588739Z"}],"nvd":[{"id":"CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T06:15:12.357Z","modified":"2026-06-17T03:07:21.543Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:19.351389Z"}],"osv":[{"id":"ALPINE-CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T06:15:12.357Z","modified":"2026-11-03T06:32:24.766002148Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:17:57.723967Z"},{"id":"CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T06:15:12.357Z","modified":"2026-10-24T14:50:58.042462882Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:15.879068Z"},{"id":"DEBIAN-CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T06:15:12.357Z","modified":"2026-10-26T12:00:50.982542368Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"UBUNTU-CVE-2020-25829","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).","status":"published","published":"2020-10-16T06:15:00Z","modified":"2025-09-08T16:46:21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"DLA-3855-1","title":"pdns-recursor - security update","status":"published","published":"2024-07-01T00:00:00Z","modified":"2026-03-09T01:23:14.611214Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"MGASA-2020-0393","title":"Updated pdns-recursor package fixes a security vulnerability","description":"An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5,\nand 4.3.x before 4.3.5. A remote attacker can cause the cached records for a\ngiven name to be updated to the Bogus DNSSEC validation state, instead of\ntheir actual DNSSEC Secure state, via a DNS ANY query. This results in a\ndenial of service for installation that always validate (dnssec=validate),\nand for clients requesting validation when on-demand validation is enabled\n(dnssec=process). (CVE-2020-25829)\n","status":"published","published":"2020-10-24T17:51:47Z","modified":"2026-04-16T04:44:26.130669742Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2020:1687-1","title":"Security update for pdns-recursor","description":"This update for pdns-recursor fixes the following issues:\n\n-pdns-recursorwas updated to 4.1.1 and 4.3.5:\n   - CVE-2020-25829: Fixed a cache pollution related to DNSSEC validation (boo#1177383)\n   - CVE-2020-14196: Fixed an access restriction bypass with API key and password authentication (boo#1173302).\n","status":"published","published":"2020-10-17T14:22:35Z","modified":"2026-02-04T03:06:30.870413Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"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"}]}}