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association.","status":"published","published":"2018-03-06T20:29:01.5Z","modified":"2026-06-17T02:02:45.697Z","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":"2026-11-02T14:04:23.783914Z"}],"osv":[{"id":"CVE-2018-7185","description":"The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the \"other side\" of an interleaved association causing the victim ntpd to reset its association.","status":"published","published":"2018-03-06T20:29:01.5Z","modified":"2026-04-16T06:19:36.979958893Z","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":"2026-11-02T15:44:09.74357Z"},{"id":"DEBIAN-CVE-2018-7185","description":"The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the \"other side\" of an interleaved association causing the victim ntpd to reset its association.","status":"published","published":"2018-03-06T20:29:01.5Z","modified":"2026-08-04T06:04:23.163807243Z","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":"2026-11-02T15:45:30.867575Z"},{"id":"UBUNTU-CVE-2018-7185","description":"The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the \"other side\" of an interleaved association causing the victim ntpd to reset its association.","status":"published","published":"2018-03-06T00:00:00Z","modified":"2026-02-04T03:07:47.12388Z","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"},{"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":"2026-11-02T15:54:18.772093Z"},{"id":"CLSA-2026-1777453146","title":"ntp: Fix of 2 CVEs","description":"- CVE-2018-7185: unauthenticated packet with a zero-origin timestamp can\n  reset an authenticated interleave association leading to denial of service.\n- CVE-2019-8936: NULL pointer dereference triggered by an authenticated\n  mode 6 control packet with no value field.","status":"published","published":"2026-05-02T00:51:53Z","modified":"2026-06-01T00:33:16.994141331Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1777453307","title":"ntp: Fix of 2 CVEs","description":"- CVE-2018-7185: unauthenticated packet with a zero-origin timestamp can\n  reset an authenticated interleave association leading to denial of service.\n- CVE-2019-8936: NULL pointer dereference triggered by an authenticated\n  mode 6 control packet with no value field.","status":"published","published":"2026-04-29T09:01:52Z","modified":"2026-06-01T00:33:25.962780871Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"MGASA-2018-0195","title":"Updated ntp packages fix security vulnerabilities","description":"This release addresses five security issues in ntpd for Mageia 6:\n\nLOW/MEDIUM: Sec 3012 / CVE-2016-1549 / VU#961909: Sybil vulnerability:\nephemeral association attack While fixed in ntp-4.2.8p7, there are\nsignificant additional protections for this issue in 4.2.8p11.\nReported by Matt Van Gundy of Cisco.\n\nINFO/MEDIUM: Sec 3412 / CVE-2018-7182 / VU#961909: ctl_getitem(): buffer\nread overrun leads to undefined behavior and information leak\nReported by Yihan Lian of Qihoo 360.\n\nLOW: Sec 3415 / CVE-2018-7170 / VU#961909: Multiple authenticated\nephemeral associations. Reported on the questions@ list.\n\nLOW: Sec 3453 / CVE-2018-7184 / VU#961909: Interleaved symmetric mode\ncannot recover from bad state. Reported by Miroslav Lichvar of Red Hat.\n\nLOW/MEDIUM: Sec 3454 / CVE-2018-7185 / VU#961909: Unauthenticated packet\ncan reset authenticated interleaved association.\nReported by Miroslav Lichvar of Red Hat.\n\none security issue in ntpq:\nMEDIUM: Sec 3414 / CVE-2018-7183 / VU#961909: ntpq:decodearr() can write\nbeyond its buffer limit. Reported by Michael Macnair of Thales-esecurity.com.\n\nand provides over 33 bugfixes and 32 other improvements. ENotification\nof these issues were delivered to our Institutional members on a rolling\nbasis as they were reported and as progress was made.\n","status":"published","published":"2018-04-06T22:54:47Z","modified":"2026-04-16T06:26:02.29934231Z","updated_at":"2026-11-02T15:49:40.442238Z"},{"id":"openSUSE-SU-2024:11102-1","title":"ntp-4.2.8p15-7.2 on GA media","description":"These are all security issues fixed in the ntp-4.2.8p15-7.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:08:15.257534Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"SUSE-SU-2018:0808-1","title":"Security update for ntp","description":"This update for ntp fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2016-1549: Significant additional protections against CVE-2016-1549 that was fixed in ntp-4.2.8p7 (bsc#1082210).\n- CVE-2018-7170: Ephemeral association time spoofing additional protection (bsc#1083424).\n- CVE-2018-7182: Buffer read overrun leads information leak in ctl_getitem() (bsc#1083426).\n- CVE-2018-7183: decodearr() can write beyond its buffer limit (bsc#1083417).\n- CVE-2018-7184: Interleaved symmetric mode cannot recover from bad state (bsc#1083422).\n- CVE-2018-7185: Unauthenticated packet can reset authenticated interleaved association (bsc#1083420).\n\nBug fixes:\n\n- bsc#1077445: Don't use libevent's cached time stamps in sntp.\n- Disable CMAC in ntp when building against a version of OpenSSL that doesn't support it.\n","status":"published","published":"2018-03-26T09:50:07Z","modified":"2026-02-04T02:57:42.78561Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0956-1","title":"Security update for ntp","description":"This update for ntp fixes the following issues:\n\n- Update to 4.2.8p11 (bsc#1082210):\n  * CVE-2016-1549: Sybil vulnerability: ephemeral association\n    attack. While fixed in ntp-4.2.8p7, there are significant\n    additional protections for this issue in 4.2.8p11.\n  * CVE-2018-7182: ctl_getitem(): buffer read overrun\n    leads to undefined behavior and information leak. (bsc#1083426)\n  * CVE-2018-7170: Multiple authenticated ephemeral\n    associations. (bsc#1083424)\n  * CVE-2018-7184: Interleaved symmetric mode cannot\n    recover from bad state. (bsc#1083422)\n  * CVE-2018-7185: Unauthenticated packet can reset\n    authenticated interleaved association. (bsc#1083420)\n  * CVE-2018-7183: ntpq:decodearr() can write beyond its\n    buffer limit.(bsc#1083417)\n- Don't use libevent's cached time stamps in sntp. (bsc#1077445)\n\n","status":"published","published":"2018-04-16T15:31:58Z","modified":"2026-02-04T04:27:09.719502Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:1464-1","title":"Security update for ntp","description":"This update for ntp fixes the following issues:\n\n- Update to 4.2.8p11 (bsc#1082210):\n  * CVE-2016-1549: Sybil vulnerability: ephemeral association\n    attack. While fixed in ntp-4.2.8p7, there are significant\n    additional protections for this issue in 4.2.8p11.\n  * CVE-2018-7182: ctl_getitem(): buffer read overrun\n    leads to undefined behavior and information leak. (bsc#1083426)\n  * CVE-2018-7170: Multiple authenticated ephemeral\n    associations. (bsc#1083424)\n  * CVE-2018-7184: Interleaved symmetric mode cannot\n    recover from bad state. (bsc#1083422)\n  * CVE-2018-7185: Unauthenticated packet can reset\n    authenticated interleaved association. (bsc#1083420)\n  * CVE-2018-7183: ntpq:decodearr() can write beyond its\n    buffer limit.(bsc#1083417)\n- Don't use libevent's cached time stamps in sntp. (bsc#1077445)\n- Fix systemd migration in %pre (bsc#1034892).\n\n","status":"published","published":"2018-05-29T14:44:40Z","modified":"2025-05-02T04:05:08.576194Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"SUSE-SU-2018:1765-1","title":"Security update for ntp","description":"This update for ntp fixes the following issues:\n\n- Update to 4.2.8p11 (bsc#1082210):\n  * CVE-2016-1549: Sybil vulnerability: ephemeral association\n    attack. While fixed in ntp-4.2.8p7, there are significant\n    additional protections for this issue in 4.2.8p11.\n  * CVE-2018-7182: ctl_getitem(): buffer read overrun\n    leads to undefined behavior and information leak. (bsc#1083426)\n  * CVE-2018-7170: Multiple authenticated ephemeral\n    associations. (bsc#1083424)\n  * CVE-2018-7184: Interleaved symmetric mode cannot\n    recover from bad state. (bsc#1083422)\n  * CVE-2018-7185: Unauthenticated packet can reset\n    authenticated interleaved association. (bsc#1083420)\n  * CVE-2018-7183: ntpq:decodearr() can write beyond its\n    buffer limit.(bsc#1083417)\n- Don't use libevent's cached time stamps in sntp. (bsc#1077445)\n\nThis update is a reissue of the previous update with LTSS channels included.\n","status":"published","published":"2018-06-20T13:46:39Z","modified":"2026-02-04T03:30:59.371908Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"SUSE-SU-2018:1765-2","title":"Security update for ntp","description":"This update for ntp fixes the following issues:\n\n- Update to 4.2.8p11 (bsc#1082210):\n  * CVE-2016-1549: Sybil vulnerability: ephemeral association\n    attack. While fixed in ntp-4.2.8p7, there are significant\n    additional protections for this issue in 4.2.8p11.\n  * CVE-2018-7182: ctl_getitem(): buffer read overrun\n    leads to undefined behavior and information leak. (bsc#1083426)\n  * CVE-2018-7170: Multiple authenticated ephemeral\n    associations. (bsc#1083424)\n  * CVE-2018-7184: Interleaved symmetric mode cannot\n    recover from bad state. (bsc#1083422)\n  * CVE-2018-7185: Unauthenticated packet can reset\n    authenticated interleaved association. (bsc#1083420)\n  * CVE-2018-7183: ntpq:decodearr() can write beyond its\n    buffer limit.(bsc#1083417)\n- Don't use libevent's cached time stamps in sntp. (bsc#1077445)\n\nThis update is a reissue of the previous update with LTSS channels included.\n","status":"published","published":"2018-10-18T12:46:59Z","modified":"2026-02-04T04:28:51.286742Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"USN-3707-1","title":"ntp vulnerabilities","description":"Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6\npackets. A remote attacker could possibly use this issue to cause ntpd to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)\n\nMichael Macnair discovered that NTP incorrectly handled certain responses.\nA remote attacker could possibly use this issue to execute arbitrary code.\n(CVE-2018-7183)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu\n18.04 LTS. (CVE-2018-7184)\n\nMiroslav Lichvar discovered that NTP incorrectly handled certain\nzero-origin timestamps. A remote attacker could possibly use this issue to\ncause a denial of service. (CVE-2018-7185)\n","status":"published","published":"2018-07-09T16:48:16Z","modified":"2026-02-10T04:41:23Z","updated_at":"2026-11-02T16:58:13.496563Z"}]}}