Improper Data Handling Affecting ntp-perl package, versions <0:4.2.8p11-1.37.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.17% (55th percentile)

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  • Snyk IDSNYK-AMZN201803-NTPPERL-1712673
  • published27 Sept 2021
  • disclosed6 Jan 2017

Introduced: 6 Jan 2017

CVE-2016-1549  (opens in a new tab)
CWE-19  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 ntp-perl to version 0:4.2.8p11-1.37.amzn1 or higher.
This issue was patched in ALAS-2018-1009.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ntp-perl package and not the ntp-perl package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.

CVSS Scores

version 3.1