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CVE-2015-7704

Published: 22 October 2015

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

Notes

AuthorNote
mdeslaur
fix is bad, see http://lists.ntp.org/pipermail/pool/2015-October/007631.html

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
ntp
Launchpad, Ubuntu, Debian
precise
Released (1:4.2.6.p3+dfsg-1ubuntu3.6)
trusty
Released (1:4.2.6.p5+dfsg-3ubuntu2.14.04.5)
upstream Needs triage

vivid
Released (1:4.2.6.p5+dfsg-3ubuntu6.2)
wily
Released (1:4.2.6.p5+dfsg-3ubuntu8.1)
Patches:
upstream: https://github.com/ntp-project/ntp/commit/21d57dc336dbe9a975baca5ce5ae4da5b71ff123
upstream: https://github.com/ntp-project/ntp/commit/492758c3d0690d3ccf7130fabfcf670997f12f7b
upstream: https://github.com/ntp-project/ntp/commit/06b143c07c7be5a54608180f69ec06b317e0aac5

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H