CVE-2016-9042

2016-12-3100:00:00

ubuntu.com

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.02 Low

EPSS

Percentile

88.8%

JSON

An exploitable denial of service vulnerability exists in the origin
timestamp check functionality of ntpd 4.2.8p9. A specially crafted
unauthenticated network packet can be used to reset the expected origin
timestamp for target peers. Legitimate replies from targeted peers will
fail the origin timestamp check (TEST2) causing the reply to be dropped and
creating a denial of service condition.

Bugs

<http://support.ntp.org/bin/view/Main/NtpBug3361>

Notes

Author	Note
mdeslaur	ntp-4.2.8p9 (21 Nov 2016), up to but not including ntp-4.2.8p10 introduced in patch for CVE-2016-7431

OSVersionArchitecturePackageVersionFilename
ubuntu16.10noarchntp< 1:4.2.8p8+dfsg-1ubuntu2.1UNKNOWN
ubuntu17.04noarchntp< 1:4.2.8p9+dfsg-2ubuntu1.1UNKNOWN