{"id":"CVE-2017-11104","aliases":["DEBIAN-CVE-2017-11104","DSA-3910-1","EUVD-2017-2741","GHSA-xhxv-xr8w-7xpm","UBUNTU-CVE-2017-11104","openSUSE-SU-2020:1085-1","openSUSE-SU-2020:1086-1","openSUSE-SU-2020:1112-1","openSUSE-SU-2020:1232-1"],"status":"published","title":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol...","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02681,"percentile":0.85919,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-07-08T10:00:00Z","modified":"2026-09-01T20:03:40Z","fixes":[{"ecosystem":"Debian:12","package":"knot","fixed_in":["2.5.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"knot","fixed_in":["2.5.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"knot","fixed_in":["2.5.3-1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"knot","fixed_in":["1.6.0-1+deb8u1"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"knot","fixed_in":["2.4.0-3+deb9u1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.1","package":"knot","fixed_in":["1.6.8-lp151.4.3.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.2","package":"knot","fixed_in":["1.6.8-lp152.5.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Package Hub 15 SP1","package":"knot","fixed_in":["1.6.8-bp151.4.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Package Hub 15 SP2","package":"knot","fixed_in":["1.6.8-bp152.4.3.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.0-1+deb8u1"}]}],"versions":["1.6.0-1"]},{"source":"osv","ecosystem":"Debian:9","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0-3+deb9u1"}]}],"versions":["2.4.0-3"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"knot","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"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.8-lp151.4.3.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 15.2","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.8-lp152.5.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.8-bp151.4.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP2","package":"knot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.8-bp152.4.3.1"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"knot-dns","product":"knot_dns"}],"references":[{"url":"http://www.debian.org/security/2017/dsa-3910","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.securityfocus.com/bid/99598","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","web"]},{"url":"https://bugs.debian.org/865678","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"http://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","Mitigation","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html","tags":["x_refsource_MISC","x_transferred","Broken Link","Mailing List","Patch","Third Party Advisory","fix","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11104"},{"url":"https://github.com/advisories/GHSA-xhxv-xr8w-7xpm"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-11104","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-11104","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-11104","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/42OALAJKQFRD7A2WI4VNPJ67KYQUEQBS/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1047841","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2017-11104","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/EDKX5CE6MK2VASOOPBWA54NF2Y3GTCZ5/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/IFCSNCQM7VHDF3EAD4FCLJ3JKYJF7QVV/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/F77H2KTFPGPWBORN3BK3OCSGGZDFZLHA/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-11104","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:00:00Z","modified":"2024-08-05T17:57:57.864Z","updated_at":"2026-11-02T14:33:19.848632Z"}],"euvd":[{"id":"EUVD-2017-2741","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:00:00Z","modified":"2024-08-05T17:57:57Z","updated_at":"2026-11-03T02:23:24.743229Z"}],"ghsa":[{"id":"GHSA-xhxv-xr8w-7xpm","title":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol...","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2022-05-13T01:16:09Z","modified":"2023-01-28T05:05:42Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:21.953506Z"}],"nvd":[{"id":"CVE-2017-11104","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:29:00.17Z","modified":"2026-06-17T01:01:13.54Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:03:54.012105Z"}],"osv":[{"id":"CVE-2017-11104","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:29:00.17Z","modified":"2026-03-15T22:14:25.790942Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:03.851821Z"},{"id":"DEBIAN-CVE-2017-11104","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:29:00.17Z","modified":"2026-09-01T20:03:40.991839023Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:28.50097Z"},{"id":"UBUNTU-CVE-2017-11104","description":"Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.","status":"published","published":"2017-07-08T10:29:00Z","modified":"2026-04-22T11:09:11.083924Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:13.729565Z"},{"id":"DSA-3910-1","title":"knot - security update","status":"published","published":"2017-07-14T00:00:00Z","modified":"2026-03-09T01:18:22.199879Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"openSUSE-SU-2020:1085-1","title":"Security update for knot","description":"This update for knot fixes the following issues:\n\n- CVE-2017-11104: Fixed an improper implementation of TSIG protocol \n  which could have allowed an attacker with a valid key name and \n  algorithm to bypass TSIG authentication (boo#1047841).\n","status":"published","published":"2020-07-26T14:26:00Z","modified":"2026-02-04T04:11:11.091357Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2020:1086-1","title":"Security update for knot","description":"This update for knot fixes the following issues:\n\n- CVE-2017-11104: Fixed an improper implementation of TSIG protocol \n  which could have allowed an attacker with a valid key name and \n  algorithm to bypass TSIG authentication (boo#1047841).\n","status":"published","published":"2020-07-26T14:26:08Z","modified":"2026-02-04T04:14:25.225508Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2020:1112-1","title":"Security update for knot","description":"This update for knot fixes the following issues:\n\n- CVE-2017-11104: Fixed an improper implementation of TSIG protocol \n  which could have allowed an attacker with a valid key name and \n  algorithm to bypass TSIG authentication (boo#1047841).\n\nThis update was imported from the openSUSE:Leap:15.1:Update update project.","status":"published","published":"2020-07-29T18:20:04Z","modified":"2026-02-04T04:27:53.30631Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2020:1232-1","title":"Security update for knot","description":"This update for knot fixes the following issues:\n\n- CVE-2017-11104: Fixed an improper implementation of TSIG protocol \n  which could have allowed an attacker with a valid key name and \n  algorithm to bypass TSIG authentication (boo#1047841).\n\nThis update was imported from the openSUSE:Leap:15.2:Update update project.","status":"published","published":"2020-08-18T12:21:35Z","modified":"2026-02-04T02:59:55.037896Z","updated_at":"2026-11-02T16:58:31.517538Z"}]}}