AIX NTP v3 Advisory : ntp_advisory9.asc (IV96305) (IV96306) (IV96307) (IV96308) (IV96309) (IV96310)

high Nessus Plugin ID 102130
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote AIX host has a version of NTP installed that is affected by multiple vulnerabilities.

Description

The version of NTP installed on the remote AIX host is affected by the following vulnerabilities :

- An out-of-bounds write error exists in the mx4200_send() function within file ntpd/refclock_mx4200.c due to improper handling of the return value of the snprintf() and vsnprintf() functions. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or possibly the execution of arbitrary code.
However, neither the researcher nor vendor could find any exploitable code path. (CVE-2017-6451)

- Multiple stack-based buffer overflow conditions exist in various wrappers around the ctl_putdata() function within file ntpd/ntp_control.c due to improper validation of certain input from the ntp.conf file.
An unauthenticated, remote attacker can exploit these, by convincing a user into deploying a specially crafted ntp.conf file, to cause a denial of service condition or possibly the execution of arbitrary code.
(CVE-2017-6458)

- A stack-based buffer overflow condition exists in the datum_pts_receive() function within file ntpd/refclock_datum.c when handling handling packets from the '/dev/datum' device due to improper validation of certain input. A local attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2017-6462)

- A denial of service vulnerability exists when handling configuration directives. An authenticated, remote attacker can exploit this, via a malformed 'mode' configuration directive, to crash the ntpd daemon.
(CVE-2017-6464)

Solution

A fix is available and can be downloaded from the IBM AIX website.

See Also

http://aix.software.ibm.com/aix/efixes/security/ntp_advisory9.asc

Plugin Details

Severity: High

ID: 102130

File Name: aix_ntp_v3_advisory9.nasl

Version: 3.11

Type: local

Published: 8/3/2017

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:ibm:aix, cpe:/a:ntp:ntp

Required KB Items: Host/AIX/lslpp, Host/local_checks_enabled, Host/AIX/version

Patch Publication Date: 7/6/2017

Vulnerability Publication Date: 2/11/2017

Reference Information

CVE: CVE-2017-6451, CVE-2017-6458, CVE-2017-6462, CVE-2017-6464

BID: 97045, 97050, 97051, 97058

CERT: 325339