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CVE-2020-13817 ntp

Affected softwarentp
Severity7.4 High CVSS 3.1 4 scores
WeaknessCWE-330
Published4 Jun 2020
Updated17 Jun 2026

Description

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.

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 3.4% 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

7.4 HIGH v3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/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 7.4 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H NVD Primary published
CVSS 3.1 7.4 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/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 5.8 none AV:N/AC:M/Au:N/C:N/I:P/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update January 2022 ↗ CPU 2022-Q1 Oracle Systems / XCP Firmware (NTP) (Prior to XCP2410, prior to XCP3110)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Systems XCP Firmware (NTP) Prior to XCP2410, prior to XCP3110

Products and versions

25 products, 59 version entries
SourceVendorProductSchemeAffected versions
nvd fujitsu m10-1 firmware generic < 2410
nvd fujitsu m10-4 firmware generic < 2410 · < 3110
nvd fujitsu m10-4s firmware generic < 2410 · < 3110
nvd fujitsu m12-1 firmware generic < 2410 · < 3110
nvd fujitsu m12-2 firmware generic < 2410 · < 3110
nvd fujitsu m12-2s firmware generic < 2410 · < 3110
nvd netapp cloud backup generic any version
nvd netapp clustered data ontap generic any version
nvd netapp data ontap generic any version
nvd netapp element software generic any version
nvd netapp h300e firmware generic any version
nvd netapp h300s firmware generic any version
nvd netapp h410c firmware generic any version
nvd netapp h410s firmware generic any version
nvd netapp h500e firmware generic any version
nvd netapp h500s firmware generic any version
nvd netapp h700e firmware generic any version
nvd netapp h700s firmware generic any version
nvd netapp hci compute node firmware generic any version
nvd netapp hci management node generic any version
nvd netapp ontap tools generic any version
nvd netapp solidfire generic any version
nvd netapp steelstore cloud integrated storage generic any version
nvd ntp ntp generic 4.2.8 · < 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 · ≥ 4.3.0 and < 4.3.100
nvd opensuse leap generic 15.1 · 15.2

Earlier manual review

A reviewer classified this CVE in an older dataset. We kept the labels and products below, but not the reviewer's reasoning.

## Manual Classification Context **Labels:** NTP, XCP FIRMWARE (NTP), NO AUTH REMOTE EXPLOIT **Products:** M10-4, M10-4S, ORACLE SYSTEMS, M12-1, M12-2, M12-2S SERVERS, FUJITSU M10-1

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/NtpBug3596 Vendor Advisory
https://bugs.ntp.org/show_bug.cgi?id=3596 Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/202007-12 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200625-0004/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory

Timeline

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