Detections
Analytics
Amazon Linux AMI : ntp (ALAS-2018-1083)
critical Nessus Plugin ID 117607
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
ntpd in ntp 4.2.x before 4.2.8p7 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549 .(CVE-2018-7170)The ntpq and ntpdc command-line utilities that are part of ntp package are vulnerable to stack-based buffer overflow via crafted hostname.
Applications using these vulnerable utilities with an untrusted input may be potentially exploited, resulting in a crash or arbitrary code execution under privileges of that application.(CVE-2018-12327)
Solution
Run 'yum update ntp' to update your system.See Also
Plugin Details
Severity: Critical
ID: 117607
File Name: ala_ALAS-2018-1083.nasl
Version: 1.2
Type: local
Agent: unix
Published: 9/20/2018
Updated: 4/5/2019
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: Critical
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: p-cpe:/a:amazon:linux:ntp, p-cpe:/a:amazon:linux:ntp-debuginfo, p-cpe:/a:amazon:linux:ntp-doc, p-cpe:/a:amazon:linux:ntp-perl, p-cpe:/a:amazon:linux:ntpdate, cpe:/o:amazon:linux
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/19/2018
Reference Information
CVE: CVE-2018-12327, CVE-2018-7170
ALAS: 2018-1083