CVE-2020-11868

high

Description

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.

References

Advisories
More

https://www.oracle.com//security-alerts/cpujul2021.html

https://security.netapp.com/advisory/ntap-20200424-0002/

https://security.gentoo.org/glsa/202007-12

https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html

https://bugzilla.redhat.com/show_bug.cgi?id=1716665

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html

http://support.ntp.org/bin/view/Main/NtpBug3592

Details

Source: Mitre, NVD

Published: 2020-04-17

Updated: 2025-05-05

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00597

	
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