Vulmon
Amazon Linux AMI Security Advisory: ALAS-2018-1083
Advisory Release Date: 2018-09-19 17:19 Pacific
Advisory Updated Date: 2018-09-19 23:35 Pacific
Severity:
Low
Issue Overview:
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)
Affected Packages:
ntp
Issue Correction:
Run yum update ntp to update your system.
New Packages:
i686:
ntpdate-4.2.8p12-1.39.amzn1.i686
ntp-4.2.8p12-1.39.amzn1.i686
ntp-debuginfo-4.2.8p12-1.39.amzn1.i686
noarch:
ntp-perl-4.2.8p12-1.39.amzn1.noarch
ntp-doc-4.2.8p12-1.39.amzn1.noarch
src:
ntp-4.2.8p12-1.39.amzn1.src
x86_64:
ntp-debuginfo-4.2.8p12-1.39.amzn1.x86_64
ntp-4.2.8p12-1.39.amzn1.x86_64
ntpdate-4.2.8p12-1.39.amzn1.x86_64