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Amazon Linux AMI: CVE-2018-7184: Security patch for ntp (ALAS-2018-1009)

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Amazon Linux AMI: CVE-2018-7184: Security patch for ntp (ALAS-2018-1009)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
03/06/2018
Created
07/25/2018
Added
05/11/2018
Modified
03/02/2020

Description

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

Solution(s)

  • amazon-linux-upgrade-ntp

References

  • ALAS-2018-1009
  • USN-3707-1
  • CVE-2018-7184

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