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Fencer Intel
medium 5.0

CVE-2014-9296 json

The receive function in ntp_proto.c in ntpd in NTP before 4.2.8 continues to execute after detecting a certain authentication error, which…

published 2014-12-20 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-9121

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.2%
EPSS 16.2% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

The receive function in ntp_proto.c in ntpd in NTP before 4.2.8 continues to execute after detecting a certain authentication error, which might allow remote attackers to trigger an unintended association change via crafted packets.

Patch / fix

  • ntp Debian 11 1:4.2.6.p5+dfsg-3.2

debian advisories DEBIAN-CVE-2014-9296

  • ntp Ubuntu 14.04 LTS 1:4.2.6.p5+dfsg-3ubuntu2.14.04.1

ubuntu advisories UBUNTU-CVE-2014-9296

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ntp RHEL 6 4.2.6p5-2.el6_6
  • ntp RHEL 7 4.2.6p5-19.el7_0
  • sntp RHEL 7 4.2.6p5-19.el7_0
  • ntpdate RHEL 6 4.2.6p5-2.el6_6
  • ntpdate RHEL 7 4.2.6p5-19.el7_0
  • ntp-perl RHEL 6 4.2.6p5-2.el6_6
  • ntp-perl RHEL 7 4.2.6p5-19.el7_0
  • ntp RHEL 6.5 EUS 4.2.6p5-2.el6_5

red hat advisories RHSA-2014:2024RHSA-2015:0104

  • ntp openSUSE Tumbleweed 4.2.8p9-1.1

opensuse advisories openSUSE-SU-2024:10181-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-9296 updated cvss 5.0

ntp: receive() missing return on error

  • Red Hat Enterprise Linux Client (v. 7) ntp 4.2.6p5-19.el7_0, ntpdate 4.2.6p5-19.el7_0 Red Hat Enterprise Linux Client Optional (v. 7) sntp 4.2.6p5-19.el7_0, ntp-perl 4.2.6p5-19.el7_0
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2014:2024
  • Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5) ntp 4.2.6p5-2.el6_5, ntp-perl 4.2.6p5-2.el6_5
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2015:0104
  • Red Hat Enterprise Linux ComputeNode (v. 7) ntp 4.2.6p5-19.el7_0, ntpdate 4.2.6p5-19.el7_0 Red Hat Enterprise Linux ComputeNode Optional (v. 7) sntp 4.2.6p5-19.el7_0, ntp-perl 4.2.6p5-19.el7_0 Red Hat Enterprise Linux Desktop (v. 6) ntp 4.2.6p5-2.el6_6, ntpdate 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-perl 4.2.6p5-2.el6_6 Red Hat Enterprise Linux HPC Node (v. 6) ntp 4.2.6p5-2.el6_6, ntpdate 4.2.6p5-2.el6_6
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2014:2024
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.5) ntp 4.2.6p5-2.el6_5, ntpdate 4.2.6p5-2.el6_5
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2015:0104
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-perl 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Server (v. 6) ntp 4.2.6p5-2.el6_6, ntpdate 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Server (v. 7) ntp 4.2.6p5-19.el7_0, ntpdate 4.2.6p5-19.el7_0
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2014:2024
  • Red Hat Enterprise Linux Server EUS (v. 6.5) ntp 4.2.6p5-2.el6_5, ntpdate 4.2.6p5-2.el6_5
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2015:0104
  • Red Hat Enterprise Linux Server Optional (v. 6) ntp-perl 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Server Optional (v. 7) sntp 4.2.6p5-19.el7_0, ntp-perl 4.2.6p5-19.el7_0
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2014:2024
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.5) ntp 4.2.6p5-2.el6_5, ntp-perl 4.2.6p5-2.el6_5
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2015:0104
show 2 more
  • Red Hat Enterprise Linux Workstation (v. 6) ntp 4.2.6p5-2.el6_6, ntpdate 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Workstation (v. 7) ntp 4.2.6p5-19.el7_0, ntpdate 4.2.6p5-19.el7_0 Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-perl 4.2.6p5-2.el6_6 Red Hat Enterprise Linux Workstation Optional (v. 7) sntp 4.2.6p5-19.el7_0, ntp-perl 4.2.6p5-19.el7_0
    fixed: vendor fix “Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.” RHSA-2014:2024
  • Red Hat Enterprise Linux 5 ntp
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-14-353-01C updated cvss 5.0

Network Time Protocol Vulnerabilities

  • Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Arbiter Systems Clock products using the network card Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Innomoninate mGuard Firmware 7.0, 8.0 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Meinberg LANTIME Firmware <V6.16.007 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Meinberg NTP V4.x <4.2.8 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Siemens ROX 1 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Siemens ROX 2 <ROX_2.6.2
    +3 more products
    Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Wind River System VxWorks 6.9 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Wind River System VxWorks 7 Arbiter Systems; Innomoninate; Meinberg; Siemens; Wind River System Wind River System WR Linux 4.3.0.X, 5.0.1.x, 6.0.0.x, 7.0.0.x
    affected: mitigation “All NTP Version 4 releases, prior to Version 4.2.8p1, are vulnerable and need to be updated to Version 4.2.8p1.” meinbergglobal.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

16.16% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bk1.ntp.org http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548ad06feXHK1HlZoY-WZVyynwvwAg referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.