ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled…
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · Partial
- Fix status
- Partial Red Hat: 16 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled, allows remote attackers to obtain sensitive information from process memory or cause a denial of service (daemon crash) via a packet containing an extension field with an invalid value for the length of its value field.
Why it matters now
EPSS 0.06135 93rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 16 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* | 4.2.0 to before 4.2.8 | Vulnerable | NTP Project |
| cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:* | 4.2.8 | Vulnerable | NTP Project |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:* | 7 | Vulnerable | Oracle |
- cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* Versions 4.2.0 to before 4.2.8 Vulnerable ·NTP Project
- cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:* Versions 4.2.8 Vulnerable ·NTP Project
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:* Versions 7 Vulnerable ·Oracle
Remediation
Red Hat 2 advisories
- RHSA-2015:2231 Released 2015-11-19 · Red Hat rating Moderatentp security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) ntp-4.2.6p5-22.el7, ntpdate-4.2.6p5-22.el7
- Red Hat Enterprise Linux Client Optional (v. 7) ntp-doc-4.2.6p5-22.el7, ntp-perl-4.2.6p5-22.el7, sntp-4.2.6p5-22.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) ntp-4.2.6p5-22.el7, ntpdate-4.2.6p5-22.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) ntp-doc-4.2.6p5-22.el7, ntp-perl-4.2.6p5-22.el7, sntp-4.2.6p5-22.el7
- Red Hat Enterprise Linux Server (v. 7) ntp-4.2.6p5-22.el7, ntpdate-4.2.6p5-22.el7
- Red Hat Enterprise Linux Server Optional (v. 7) ntp-doc-4.2.6p5-22.el7, ntp-perl-4.2.6p5-22.el7, sntp-4.2.6p5-22.el7
- Red Hat Enterprise Linux Workstation (v. 7) ntp-4.2.6p5-22.el7, ntpdate-4.2.6p5-22.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) ntp-doc-4.2.6p5-22.el7, ntp-perl-4.2.6p5-22.el7, sntp-4.2.6p5-22.el7
- RHSA-2015:1459 Released 2015-07-21 · Red Hat rating Moderatentp security, bug fix, and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) ntp-4.2.6p5-5.el6, ntpdate-4.2.6p5-5.el6
- Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-doc-4.2.6p5-5.el6, ntp-perl-4.2.6p5-5.el6
- Red Hat Enterprise Linux HPC Node (v. 6) ntp-4.2.6p5-5.el6, ntpdate-4.2.6p5-5.el6
- Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-doc-4.2.6p5-5.el6, ntp-perl-4.2.6p5-5.el6
- Red Hat Enterprise Linux Server (v. 6) ntp-4.2.6p5-5.el6, ntpdate-4.2.6p5-5.el6
- Red Hat Enterprise Linux Server Optional (v. 6) ntp-doc-4.2.6p5-5.el6, ntp-perl-4.2.6p5-5.el6
- Red Hat Enterprise Linux Workstation (v. 6) ntp-4.2.6p5-5.el6, ntpdate-4.2.6p5-5.el6
- Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-doc-4.2.6p5-5.el6, ntp-perl-4.2.6p5-5.el6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:2231 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2015:1459 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2015:2231 |
Timeline
- 2026-10-02 Threatist record created from CVE-2014-9750
- 2026-10-03 Alias added: GHSA-2cf6-qqmm-m55v
References
Advisory 6
Sources
- CVE-2014-9750 · CVE Program
- CVE-2014-9750 · NVD
- FIRST EPSS
- GHSA-2cf6-qqmm-m55v · GitHub Advisory Database · CC BY 4.0
- CVE-2014-9750 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences