Improper Input Validation Affecting ntpdate package, versions <0:4.2.6p5-40.30.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.44% (90th percentile)

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  • Snyk IDSNYK-AMZN201803-NTPDATE-1698331
  • published27 Sept 2021
  • disclosed30 Jan 2017

Introduced: 30 Jan 2017

CVE-2016-2516  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 ntpdate to version 0:4.2.6p5-40.30.amzn1 or higher.
This issue was patched in ALAS-2016-708.

NVD Description

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

NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive.

CVSS Scores

version 3.1