QID 38871

Date Published: 2022-06-08

QID 38871: Network Time Protocol Multiple Security Vulnerabilities (ntp-4.2.8p14)

The following vulnerability exists in Network Time Protocol (ntp):

process_control() should bail earlier on short packets
Unauthenticated and unmonitored ntpd may be susceptible to IPv4 attack from highly predictable transmit timestamps
DoS Attack on Unauthenticated Client

QID Detection Logic (remote):
This QID reviews the NTP banner.

After 8 or more successful attacks in a row the attacker can either modify the victim's clock by a limited amount or cause ntpd to exit. This attack is most effective in cases where an unusually short poll interval is expressly configured on the victim's ntpd.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5.8 severity.

Solution

The vendor has released fixes to resolve these issues. Refer to ntp 4.2.8p14 to obtain additional details.

Vendor References

NTP_AADV_4.2.8p14 - doc.ntp.org/support/securitynotice/

CVEs related to QID 38871

CVE-2020-11868 | CVE-2020-13817 |

Software Advisories

Advisory ID	Software	Component	Link
NTP_4.2.8p14			doc.ntp.org/support/securitynotice/

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