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TI-2016-06330 Aliases CVE-2016-7429GHSA-9h42-3m2m-9456

NTP before 4.2.8p9 changes the peer structure to the interface it receives the response…

Priority LOW 28CWE-18Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 16 fixed, 1 without a fix

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

Summary

NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.

Why it matters now

EPSS 0.07362 94th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 16 fixed, 1 without a fix

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 · 1

CPEVersionsRoleVendor
cpe:2.3:a:ntp:ntp:*:p8:*:*:*:*:*:*up to 4.2.8VulnerableNTP Project
  • cpe:2.3:a:ntp:ntp:*:p8:*:*:*:*:*:* Versions up to 4.2.8 Vulnerable ·NTP Project

Remediation

Red Hat 1 advisory

  • RHSA-2017:0252 Released 2017-02-06 · Red Hat rating Moderate
    ntp security update
    • Red Hat Enterprise Linux Client (v. 7) ntp-4.2.6p5-25.el7_3.1, ntpdate-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux Client Optional (v. 7) ntp-doc-4.2.6p5-25.el7_3.1, ntp-perl-4.2.6p5-25.el7_3.1, sntp-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux ComputeNode (v. 7) ntp-4.2.6p5-25.el7_3.1, ntpdate-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) ntp-doc-4.2.6p5-25.el7_3.1, ntp-perl-4.2.6p5-25.el7_3.1, sntp-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux Desktop (v. 6) ntp-4.2.6p5-10.el6_8.2, ntpdate-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-doc-4.2.6p5-10.el6_8.2, ntp-perl-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux HPC Node (v. 6) ntp-4.2.6p5-10.el6_8.2, ntpdate-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-doc-4.2.6p5-10.el6_8.2, ntp-perl-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Server (v. 6) ntp-4.2.6p5-10.el6_8.2, ntpdate-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Server (v. 7) ntp-4.2.6p5-25.el7_3.1, ntpdate-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux Server Optional (v. 6) ntp-doc-4.2.6p5-10.el6_8.2, ntp-perl-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Server Optional (v. 7) ntp-doc-4.2.6p5-25.el7_3.1, ntp-perl-4.2.6p5-25.el7_3.1, sntp-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux Workstation (v. 6) ntp-4.2.6p5-10.el6_8.2, ntpdate-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Workstation (v. 7) ntp-4.2.6p5-25.el7_3.1, ntpdate-4.2.6p5-25.el7_3.1
    • Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-doc-4.2.6p5-10.el6_8.2, ntp-perl-4.2.6p5-10.el6_8.2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) ntp-doc-4.2.6p5-25.el7_3.1, ntp-perl-4.2.6p5-25.el7_3.1, sntp-4.2.6p5-25.el7_3.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2017:0252
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:0252

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-7429
  2. 2026-10-03 Alias added: GHSA-9h42-3m2m-9456

References

Advisory 5

Other 3

  • TI-2015-06541 Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows… CVSS 3.1CRITICAL 9.8
  • TI-2014-07543 Multiple stack-based buffer overflows in ntpd in NTP before 4.2.8 allow remote attackers… CVSS 2.0HIGH 7.5
  • TI-2013-04524 The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote… CVSS 2.0MEDIUM 5.0
  • TI-2016-06333 The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a… CVSS 3.1HIGH 7.5
  • TI-2018-08842 Stack-based buffer overflow in ntpq and ntpdc of NTP version 4.2.8p11 allows an attacker… CVSS 3.0CRITICAL 9.8
  • TI-2016-04280 ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon… CVSS 3.1HIGH 7.5
See all 98 →

Sources

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