Oracle Linux 6 / 7 : ntp (ELSA-2016-0063)

Medium Nessus Plugin ID 88167


The remote Oracle Linux host is missing one or more security updates.


From Red Hat Security Advisory 2016:0063 :

Updated ntp packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source.

It was discovered that ntpd as a client did not correctly check the originate timestamp in received packets. A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client.

All ntp users are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing the update, the ntpd daemon will restart automatically.


Update the affected ntp packages.

See Also

Plugin Details

Severity: Medium

ID: 88167

File Name: oraclelinux_ELSA-2016-0063.nasl

Version: $Revision: 2.8 $

Type: local

Agent: unix

Published: 2016/01/26

Modified: 2017/02/13

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 5.3

Temporal Score: 4.9

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:X

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:ntp, p-cpe:/a:oracle:linux:ntp-doc, p-cpe:/a:oracle:linux:ntp-perl, p-cpe:/a:oracle:linux:ntpdate, p-cpe:/a:oracle:linux:sntp, cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7

Required KB Items: Host/local_checks_enabled, Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/01/25

Reference Information

CVE: CVE-2015-8138

OSVDB: 133383

RHSA: 2016:0063