ntp: receive() missing return on error
Published Dec 20, 2014
5.0
MEDIUMCVSS 2.0
EPSS 16.16%
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
ntp-0:4.2.6p5-2.el6_6
Fixed · RHSA-2014:2024
Red Hat Enterprise Linux 6.5 Extended Update Support
ntp-0:4.2.6p5-2.el6_5
Fixed · RHSA-2015:0104
Red Hat Enterprise Linux 7
ntp-0:4.2.6p5-19.el7_0
Fixed · RHSA-2014:2024
Red Hat Enterprise Linux 5
ntp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | ntp-0:4.2.6p5-2.el6_6 | Fixed | RHSA-2014:2024 |
| Red Hat Enterprise Linux 6.5 Extended Update Support | ntp-0:4.2.6p5-2.el6_5 | Fixed | RHSA-2015:0104 |
| Red Hat Enterprise Linux 7 | ntp-0:4.2.6p5-19.el7_0 | Fixed | RHSA-2014:2024 |
| Red Hat Enterprise Linux 5 | ntp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of ntpd as shipped with Red Hat Enterprise Linux 4 and 5. It has been addressed in Red Hat Enterprise Linux 6 and 7 via RHSA-2014:2024.
Red Hat mitigation
Remove or comment out all configuration directives beginning with the crypto keyword in your ntp.conf file.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 16.16% (0.16161) | 96.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.16% (0.16161) | 96.52th | v5 (v2026.06.15) |
| Jan 8, 2026 | 24.61% (0.24613) | 95.94th | v4 (v2025.03.14) |
| Dec 28, 2025 | 21.11% (0.21113) | 95.47th | v4 (v2025.03.14) |
| Dec 27, 2025 | 20.11% (0.20108) | 95.33th | v4 (v2025.03.14) |
| Dec 13, 2025 | 21.11% (0.21113) | 95.45th | v4 (v2025.03.14) |
| Aug 10, 2025 | 20.11% (0.20108) | 95.25th | v4 (v2025.03.14) |
| Jun 4, 2025 | 28.49% (0.28491) | 96.25th | v4 (v2025.03.14) |
| May 13, 2025 | 20.11% (0.20108) | 95.15th | v4 (v2025.03.14) |
| Mar 30, 2025 | 15.84% (0.15843) | 94.17th | v4 (v2025.03.14) |
| Mar 29, 2025 | 33.75% (0.33746) | 95.25th | v4 (v2025.03.14) |
| Mar 28, 2025 | 15.84% (0.15843) | 94.18th | v4 (v2025.03.14) |
| Mar 27, 2025 | 40.12% (0.40115) | 96.85th | v4 (v2025.03.14) |
| Mar 20, 2025 | 25.11% (0.25106) | 95.75th | v4 (v2025.03.14) |
| Mar 19, 2025 | 40.12% (0.40115) | 96.91th | v4 (v2025.03.14) |
| Mar 17, 2025 | 25.11% (0.25106) | 95.72th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.11% (0.02113) | 89.61th | v3 (v2023.03.01) |
| Apr 24, 2023 | 2.11% (0.02113) | 87.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.15% (0.02146) | 87.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.36% (0.04358) | 88.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.36% (0.04358) | 86.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.36% (0.04358) | 70.59th | v2 (v2022.01.01) |
References (24)
- http://advisories.mageia.org/MGASA-2014-0541.html x_refsource_CONFIRM
- http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548ad06feXHK1HlZoY-WZVyynwvwAg x_refsource_CONFIRMExploit
- http://bugs.ntp.org/show_bug.cgi?id=2670 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00020.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=bugtraq&m=142590659431171&w=2 vendor-advisoryx_refsource_HP
- http://marc.info/?l=bugtraq&m=142853370924302&w=2 vendor-advisoryx_refsource_HP
- http://marc.info/?l=bugtraq&m=144182594518755&w=2 vendor-advisoryx_refsource_HP
- http://rhn.redhat.com/errata/RHSA-2015-0104.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/62209 third-party-advisoryx_refsource_SECUNIA
- http://support.ntp.org/bin/view/Main/SecurityNotice x_refsource_CONFIRMVendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#receive_missing_return_on_error
- http://www.kb.cert.org/vuls/id/852879 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:003 vendor-advisoryx_refsource_MANDRIVA
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/71758 vdb-entryx_refsource_BID
- https://access.redhat.com/articles/1305723
- https://access.redhat.com/security/cve/CVE-2014-9296 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1176040 x_refsource_CONFIRMIssue Tracking
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232 x_refsource_CONFIRM
- https://kc.mcafee.com/corporate/index?page=content&id=SB10103 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2014-9296
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20141222-ntpd vendor-advisoryx_refsource_CISCO
- https://www.arista.com/en/support/advisories-notices/security-advisories/1047-security-advisory-8 x_refsource_MISC
- https://www.cve.org/CVERecord?id=CVE-2014-9296
Change history (0)
No recorded changes yet.