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Vulnerability record · CVE-2014-9296 · published 20 December 2014

CVE-2014-9296: Ntp vulnerability

Ntp · Ntp

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.

5.0 CVSS 2.0 Medium EPSS 16% · top 3.2% CWE-17 · CWE-17
5.0CVSS 2.0 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
38References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://advisories.mageia.org/MGASA-2014-0541.html
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548ad06feXHK1HlZoY-WZVyynwvwAg Exploit
http://bugs.ntp.org/show_bug.cgi?id=2670
http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00020.html
http://marc.info/?l=bugtraq&m=142590659431171&w=2
http://marc.info/?l=bugtraq&m=142853370924302&w=2
http://marc.info/?l=bugtraq&m=144182594518755&w=2
http://rhn.redhat.com/errata/RHSA-2015-0104.html
http://secunia.com/advisories/62209
http://support.ntp.org/bin/view/Main/SecurityNotice Vendor Advisory
http://www.kb.cert.org/vuls/id/852879 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2015:003
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.securityfocus.com/bid/71758
https://bugzilla.redhat.com/show_bug.cgi?id=1176040
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232
https://kc.mcafee.com/corporate/index?page=content&id=SB10103
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20141222-ntpd
https://www.arista.com/en/support/advisories-notices/security-advisories/1047-security-advisory-8
http://advisories.mageia.org/MGASA-2014-0541.html
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548ad06feXHK1HlZoY-WZVyynwvwAg Exploit
http://bugs.ntp.org/show_bug.cgi?id=2670
http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00020.html
http://marc.info/?l=bugtraq&m=142590659431171&w=2
http://marc.info/?l=bugtraq&m=142853370924302&w=2
http://marc.info/?l=bugtraq&m=144182594518755&w=2
http://rhn.redhat.com/errata/RHSA-2015-0104.html
http://secunia.com/advisories/62209
http://support.ntp.org/bin/view/Main/SecurityNotice Vendor Advisory
http://www.kb.cert.org/vuls/id/852879 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2015:003
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.securityfocus.com/bid/71758
https://bugzilla.redhat.com/show_bug.cgi?id=1176040
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232
https://kc.mcafee.com/corporate/index?page=content&id=SB10103
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20141222-ntpd
https://www.arista.com/en/support/advisories-notices/security-advisories/1047-security-advisory-8

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-12327Ntp out-of-bounds write vulnerabilityStack-based buffer overflow in ntpq and ntpdc of NTP version 4.2.8p11 allows an attacker to achieve code execution or escalate to higher privileges v…EPSS 28%9.8CVE-2018-7183Ntp out-of-bounds write vulnerabilityBuffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an …EPSS 10%9.8CVE-2015-7705Ntp improper input validation vulnerabilityThe rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of …EPSS 12%9.8CVE-2015-7853Ntp classic buffer overflow vulnerabilityThe datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code o…EPSS 12%9.8CVE-2015-7871ntpd Crypto-NAK packets bypass authenticationntpd in NTP 4.2.x before 4.2.8p4 and 4.3.x before 4.3.77 mishandles Crypto-NAK packets, allowing remote attackers to bypass authentication. Because N…EPSS 82%analysed8.8CVE-2015-7849Ntp use after free vulnerabilityUse-after-free vulnerability in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to possibly execute arbit…EPSS 17%8.8CVE-2015-7854Ntp classic buffer overflow vulnerabilityBuffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to ca…EPSS 15%8.8CVE-2017-6458Ntp memory buffer overflow vulnerabilityMultiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecifi…EPSS 6.5%

Source: NIST National Vulnerability Database (record CVE-2014-9296), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.