Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2016-1551

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference clocks are treated like other peers and stored in the same structure, any packet with a source ip address of a reference clock (127.127.1.1 for example) that reaches the receive() function will match that reference clock's peer record and will be treated as a trusted peer. Any system that lacks the typical martian packet filtering which would block these packets is in danger of having its time controlled by an attacker.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 69.6%
CVSS Severity
CVSS v3 Score 3.7
CVSS v2 Score 2.6
Products affected by CVE-2016-1551
  • Ntp » Ntp » Version: 4.2.8
    cpe:2.3:a:ntp:ntp:4.2.8
  • Ntpsec » Ntpsec » Version: a5fb34b9cc89b92a8fef2f459004865c93bb7f92
    cpe:2.3:a:ntpsec:ntpsec:a5fb34b9cc89b92a8fef2f459004865c93bb7f92


Products
Pricing
Contact Us

Shodan ® - All rights reserved