ntp: ntp-keygen uses weak random number generator and seed when generating MD5 keys
Published Dec 20, 2014
7.5
HIGHCVSS 2.0
EPSS 12.98%
Description
util/ntp-keygen.c in ntp-keygen in NTP before 4.2.7p230 uses a weak RNG seed, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a brute-force attack.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
ntp-0:4.2.2p1-18.el5_11
Fixed · RHSA-2014:2025
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 4
ntp
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | ntp-0:4.2.2p1-18.el5_11 | Fixed | RHSA-2014:2025 |
| 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 4 | ntp | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:P/I:P/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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 12.98% (0.12978) | 96.21th | v5 (v2026.06.15) |
| Jun 15, 2026 | 12.98% (0.12978) | 95.81th | v5 (v2026.06.15) |
| Dec 28, 2025 | 33.27% (0.33271) | 96.75th | v4 (v2025.03.14) |
| Dec 27, 2025 | 31.97% (0.31970) | 96.68th | v4 (v2025.03.14) |
| Dec 13, 2025 | 33.27% (0.33271) | 96.74th | v4 (v2025.03.14) |
| Aug 10, 2025 | 31.97% (0.31970) | 96.64th | v4 (v2025.03.14) |
| May 13, 2025 | 43.52% (0.43522) | 97.34th | v4 (v2025.03.14) |
| Mar 30, 2025 | 37.02% (0.37023) | 96.84th | v4 (v2025.03.14) |
| Mar 29, 2025 | 56.37% (0.56372) | 97.26th | v4 (v2025.03.14) |
| Mar 28, 2025 | 37.02% (0.37023) | 96.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 41.85% (0.41850) | 97.11th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.79% (0.03792) | 92.20th | v3 (v2023.03.01) |
| Apr 24, 2023 | 4.44% (0.04435) | 91.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.50% (0.04503) | 91.17th | 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 (26)
- http://advisories.mageia.org/MGASA-2014-0541.html x_refsource_CONFIRM
- http://bk1.ntp.org/ntp-dev/util/ntp-keygen.c?PAGE=diffs&REV=4eae1b72298KRoBQmX-y8URCiRPH5g x_refsource_CONFIRMExploit
- http://bugs.ntp.org/show_bug.cgi?id=2666 x_refsource_CONFIRM
- http://marc.info/?l=bugtraq&m=142469153211996&w=2 vendor-advisoryx_refsource_HP
- 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-2014-2025.html vendor-advisoryx_refsource_REDHAT
- 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#non_cryptographic_random_number
- 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/71762 vdb-entryx_refsource_BID
- https://access.redhat.com/articles/1305723
- https://access.redhat.com/security/cve/CVE-2014-9294 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1176035 x_refsource_CONFIRMIssue Tracking
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232 x_refsource_CONFIRM
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04916783 x_refsource_CONFIRM
- https://kc.mcafee.com/corporate/index?page=content&id=SB10103 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2014-9294
- 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-2014-9294
Change history (0)
No recorded changes yet.