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CVE-2015-7979

Published: 31 December 2015

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (client-server association tear down) by sending broadcast packets with invalid authentication to a broadcast client.

Notes

AuthorNote
mdeslaur
fedora has an alternate fix
http://lists.ntp.org/pipermail/hackers/2016-January/007416.html

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
ntp
Launchpad, Ubuntu, Debian
precise
Released (1:4.2.6.p3+dfsg-1ubuntu3.11)
trusty
Released (1:4.2.6.p5+dfsg-3ubuntu2.14.04.10)
upstream
Released (4.2.8p6)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial
Released (1:4.2.8p4+dfsg-3ubuntu5.3)
yakkety Not vulnerable
(1:4.2.8p4+dfsg-3ubuntu6)
zesty Not vulnerable
(1:4.2.8p4+dfsg-3ubuntu6)
Patches:
upstream: https://github.com/ntp-project/ntp/commit/fe46889f7baa75fc8e6c0fcde87706d396ce1461
vendor: http://pkgs.fedoraproject.org/cgit/rpms/ntp.git/tree/ntp-4.2.6p5-cve-2015-7979.patch

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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H