Chrony before 1.29.1 has traffic amplification in cmdmon protocol
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
Chrony before 1.29.1 has traffic amplification in cmdmon protocol
Why it matters now
EPSS 0.04167 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| Chrony | Chrony | Fixed in 1.29.1 | — | No fix listed | CNA |
- Chrony VendorChrony Affected Fixed in 1.29.1 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chrony_project:chrony:*:*:*:*:*:*:*:* | before 1.29 | Vulnerable | Chrony Project |
| 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:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:* | 19 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:* | 20 | Vulnerable | Fedoraproject |
- cpe:2.3:a:chrony_project:chrony:*:*:*:*:*:*:*:* Versions before 1.29 Vulnerable ·Chrony Project
- 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:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:* Versions 19 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:* Versions 20 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2014-0021
- 2026-10-03 Alias added: GHSA-4xjv-r88q-f87j
- 2026-10-04 EPSS moved to the 90th–95th percentile
- 2026-10-04 Priority changed: LOW → MEDIUM
References
Advisory 9
- https://security-tracker.debian.org/tracker/CVE-2014-0021
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-0021
- http://www.openwall.com/lists/oss-security/2014/01/18/2
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127837.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128753.html
- http://www.openwall.com/lists/oss-security/2014/01/17/9
- http://www.openwall.com/lists/oss-security/2014/01/18/1
- http://www.openwall.com/lists/oss-security/2014/01/18/3
- http://www.openwall.com/lists/oss-security/2014/01/19/1
Sources
- CVE-2014-0021 · CVE Program
- CVE-2014-0021 · NVD
- FIRST EPSS
- GHSA-4xjv-r88q-f87j · GitHub Advisory Database · CC BY 4.0
- CVE-2014-0021 · 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