Improper Input Validation Affecting ntp package, versions <1:4.2.8p7+dfsg-1


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.48% (77th percentile)

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  • Snyk ID SNYK-DEBIAN11-NTP-529727
  • published 30 Jan 2017
  • disclosed 30 Jan 2017

How to fix?

Upgrade Debian:11 ntp to version 1:4.2.8p7+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression.