CVE-2020-13817 MEDIUM

CVE-2020-13817

Vendor N/A
Product n/a
Published June 4, 2020
Last update May 5, 2025

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 4, 2020 CVE published
May 5, 2025 Record updated