Rapid7 Vulnerability & Exploit Database

Amazon Linux AMI: CVE-2016-4954: Security patch for ntp (ALAS-2016-727)

Back to Search

Amazon Linux AMI: CVE-2016-4954: Security patch for ntp (ALAS-2016-727)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
07/04/2016
Created
07/25/2018
Added
08/01/2016
Modified
05/07/2019

Description

The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.

Solution(s)

  • amazon-linux-upgrade-ntp

References

  • amazon-linux-upgrade-ntp

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;