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CVE-2015-7973

Published: 31 December 2015

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

Notes

AuthorNote
mdeslaur
unfixed in debian and fedora

Priority

Low

Cvss 3 Severity Score

6.5

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 (4.2.8p5)
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)
vivid Ignored
(end of life)
Patches:
upstream: https://github.com/ntp-project/ntp/commit/f6a0225a9fc6ba82268d0d69a8a4eab788889262
upstream: https://github.com/ntp-project/ntp/commit/c801a6a5f84d7f385a42e0073c94b2e0664f8ad2
upstream: https://github.com/ntp-project/ntp/commit/50ef2f62dc326bc9edac166b2b4ba5b5d8b4f7d4

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H