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Amazon Linux AMI 2: CVE-2020-13817: Security patch for ntp (ALAS-2020-1455)

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Amazon Linux AMI 2: CVE-2020-13817: Security patch for ntp (ALAS-2020-1455)

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:P)
Published
06/04/2020
Created
07/21/2020
Added
07/21/2020
Modified
09/30/2022

Description

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

Solution(s)

  • amazon-linux-ami-2-upgrade-ntp
  • amazon-linux-ami-2-upgrade-ntp-debuginfo
  • amazon-linux-ami-2-upgrade-ntp-doc
  • amazon-linux-ami-2-upgrade-ntp-perl
  • amazon-linux-ami-2-upgrade-ntpdate
  • amazon-linux-ami-2-upgrade-sntp

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