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CVE-2015-8138

Published: 31 December 2015

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.

Notes

AuthorNote
mdeslaur
fix may be incomplete because of fix for CVE-2015-7704
http://lists.ntp.org/pipermail/hackers/2016-January/007406.html
http://lists.ntp.org/pipermail/hackers/2016-January/007416.html
Ubuntu and Debian use Fedora's fix for CVE-2015-7704, so this
one isn't incomplete.

Priority

Medium

Cvss 3 Severity Score

5.3

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/880191b72409a1965712999d248d70e6f7163af8
vendor: http://pkgs.fedoraproject.org/cgit/rpms/ntp.git/tree/ntp-4.2.6p5-cve-2015-8138.patch

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N