Network Time Protocol Daemon (ntpd) 4.x < 4.2.8p12 / 4.3.x < 4.3.94 Multiple Vulnerabilities

High Nessus Plugin ID 111968

Synopsis

The remote NTP server is affected by multiple vulnerabilities.

Description

The version of the remote NTP server is 4.x prior to 4.2.8p12, or is 4.3.x prior to 4.3.94. It is, therefore, affected by the following vulnerabilities:

- A race condition exists that is triggered during the handling of a saturation of ephemeral associations. An authenticated, remote attacker can exploit this to defeat NTP's clock selection algorithm and modify a user's clock. (CVE-2016-1549)

- A buffer overflow vulnerability exists within the openhost() function of the ntpq anmd ntpdc. A local attacker, using an excessively large hostname, could cause a stack overflow and potentially allow for remote code execution or privilege escalation. (CVE-2018-12327)

Solution

Upgrade to NTP version 4.2.8p12, 4.3.94 or later.

See Also

http://www.nessus.org/u?80cd6f97

Plugin Details

Severity: High

ID: 111968

File Name: ntp_4_2_8p12.nasl

Version: 1.4

Type: remote

Family: Misc.

Published: 2018/08/17

Updated: 2019/04/05

Dependencies: 10884

Configuration: Enable paranoid mode

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2018-12327

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:ntp:ntp

Required KB Items: NTP/Running, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/08/14

Vulnerability Publication Date: 2018/08/14

Reference Information

CVE: CVE-2016-1549, CVE-2018-12327