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CVE-2020-11868 ntp

Affected softwarentp
Severity7.5 High CVSS 3.1 4 scores
WeaknessCWE-346
Published17 Apr 2020
Updated17 Jun 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 2.1% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CISA-ADP Secondary
CVSS 3.0 5.9 MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H cve@mitre.org Secondary
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Products and versions

17 products, 46 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 8.0
nvd netapp all flash fabric-attached storage 8300 firmware generic any version
nvd netapp all flash fabric-attached storage 8700 firmware generic any version
nvd netapp all flash fabric-attached storage a400 firmware generic any version
nvd netapp clustered data ontap generic any version
nvd netapp data ontap generic any version
nvd netapp fabric-attached storage 8300 firmware generic any version
nvd netapp fabric-attached storage 8700 firmware generic any version
nvd netapp fabric-attached storage a400 firmware generic any version
nvd netapp hci management node generic any version
nvd netapp hci storage node firmware generic any version
nvd netapp solidfire generic any version
nvd netapp vasa provider for clustered data ontap generic ≥ 7.2
nvd netapp virtual storage console generic ≥ 7.2
nvd ntp ntp generic ≤ 4.2.7 · 4.2.8 · 4.2.8:p1 · 4.2.8:p1-beta1 · 4.2.8:p1-beta2 · 4.2.8:p1-beta3 · 4.2.8:p1-beta4 · 4.2.8:p1-beta5 · 4.2.8:p1-rc1 · 4.2.8:p1-rc2 · 4.2.8:p2 · 4.2.8:p2-rc1 · 4.2.8:p2-rc2 · 4.2.8:p2-rc3 · 4.2.8:p3 · 4.2.8:p3-rc1 · 4.2.8:p3-rc2 · 4.2.8:p3-rc3 · 4.2.8:p4 · 4.2.8:p5 · 4.2.8:p6 · 4.2.8:p7 · 4.2.8:p8 · 4.2.8:p9 · 4.2.8:p10 · 4.2.8:p11 · 4.2.8:p12 · 4.2.8:p13 · ≥ 4.3.98 and < 4.3.100
nvd opensuse leap generic 15.1 · 15.2
nvd redhat enterprise linux generic 7.0

References

URLTags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html Mailing List, Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3592 Patch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1716665 Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202007-12 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200424-0002/ Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory

Timeline

Published2020-04-17By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.