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TI-2018-05205 Aliases CVE-2018-7184GHSA-rf4v-73h8-p6f7

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received"…

Priority MEDIUM 44Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Deferred Red Hat: fix deferred

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

Why it matters now

EPSS 0.08633 95th percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 23

CPEVersionsRoleVendor
cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:*4.2.8 p10VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:*4.2.8 p4VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*4.2.8 p5VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*4.2.8 p6VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*4.2.8 p7VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:*4.2.8 p8VulnerableNTP Project
cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:*4.2.8 p9VulnerableNTP Project
cpe:2.3:a:synology:router_manager:1.1:*:*:*:*:*:*:*1.1VulnerableSynology
cpe:2.3:a:synology:skynas:-:*:*:*:*:*:*:*not specified by NVDVulnerableSynology
cpe:2.3:a:synology:virtual_diskstation_manager:-:*:*:*:*:*:*:*not specified by NVDVulnerableSynology
  • cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:* Versions 4.2.8 p10 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:* Versions 4.2.8 p4 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:* Versions 4.2.8 p5 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:* Versions 4.2.8 p6 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:* Versions 4.2.8 p7 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:* Versions 4.2.8 p8 Vulnerable ·NTP Project
  • cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:* Versions 4.2.8 p9 Vulnerable ·NTP Project
  • cpe:2.3:a:synology:router_manager:1.1:*:*:*:*:*:*:* Versions 1.1 Vulnerable ·Synology
  • cpe:2.3:a:synology:skynas:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Synology
  • cpe:2.3:a:synology:virtual_diskstation_manager:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Synology
Show 13 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:synology:diskstation_manager:5.2:*:*:*:*:*:*:*5.2VulnerableSynology
cpe:2.3:o:synology:diskstation_manager:6.0:*:*:*:*:*:*:*6.0VulnerableSynology
cpe:2.3:o:synology:diskstation_manager:6.1:*:*:*:*:*:*:*6.1VulnerableSynology
cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableSynology
cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:*14.0VulnerableSlackware
cpe:2.3:o:slackware:slackware_linux:14.1:*:*:*:*:*:*:*14.1VulnerableSlackware
cpe:2.3:o:slackware:slackware_linux:14.2:*:*:*:*:*:*:*14.2VulnerableSlackware
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
  • cpe:2.3:o:synology:diskstation_manager:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·Synology
  • cpe:2.3:o:synology:diskstation_manager:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Synology
  • cpe:2.3:o:synology:diskstation_manager:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·Synology
  • cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Synology
  • cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:* Versions 14.0 Vulnerable ·Slackware
  • cpe:2.3:o:slackware:slackware_linux:14.1:*:*:*:*:*:*:* Versions 14.1 Vulnerable ·Slackware
  • cpe:2.3:o:slackware:slackware_linux:14.2:*:*:*:*:*:*:* Versions 14.2 Vulnerable ·Slackware
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-7184
  2. 2026-10-03 Alias added: GHSA-rf4v-73h8-p6f7
  3. 2026-10-13 EPSS moved to the 95th–99th percentile

References

Advisory 7

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences