synced 11 MIN AGO
01 Record

CVE-2020-13817

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

MediumPUBLISHEDCNA: mitre
CNA base score5.9 CVSS v3.xCVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N

02 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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
3.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 88.5% of scored records. A rank, not a probability.
NVD base score
7.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-06-04 12:31Z6 YR AGO
Last updated
2025-05-05 17:07Z1 YR AGO
Reserved
2020-06-04
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Medium (CVSS 5.9)
CNA CVSS vector
CVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
Weaknesses
  • CWE-330Use of Insufficiently Random ValuesClass
  • CWE-358Improperly Implemented Security Check for StandardBase
Data version
5.1
Document digest
ef1b4886f4da944824a5b98bfe9ffaa91cd9364967647f80d824138596968064

05 Affected products

VendorProductVersionsPlatforms
fujitsum10-1Not specified—
fujitsum10-1_firmwareNot specified—
fujitsum10-4Not specified—
fujitsum10-4_firmwareNot specified—
fujitsum10-4sNot specified—
fujitsum10-4s_firmwareNot specified—
fujitsum12-1Not specified—
fujitsum12-1_firmwareNot specified—
fujitsum12-2Not specified—
fujitsum12-2_firmwareNot specified—
fujitsum12-2sNot specified—
fujitsum12-2s_firmwareNot specified—
netappcloud_backupNot specified—
netappclustered_data_ontapNot specified—
netappdata_ontapNot specified—
netappelement_softwareNot specified—
netapph300eNot specified—
netapph300e_firmwareNot specified—
netapph300sNot specified—
netapph300s_firmwareNot specified—
netapph410cNot specified—
netapph410c_firmwareNot specified—
netapph410sNot specified—
netapph410s_firmwareNot specified—
netapph500eNot specified—
netapph500e_firmwareNot specified—
netapph500sNot specified—
netapph500s_firmwareNot specified—
netapph700eNot specified—
netapph700e_firmwareNot specified—
netapph700sNot specified—
netapph700s_firmwareNot specified—
netapphci_compute_nodeNot specified—
netapphci_compute_node_firmwareNot specified—
netapphci_management_nodeNot specified—
netappontap_toolsNot specified—
netappsolidfireNot specified—
ntpntpNot specified—
opensuseleapNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

Debian 11

  • ntp
    Fixed in 1:4.2.8p14+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • ntp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • ntp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • ntp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • ntp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • ntp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.