HIGH
chrony: DDoS via amplification in cmdmon protocol
Published Nov 15, 2019
7.5
HIGHCVSS 3.1
EPSS 3.80%
Description
Chrony before 1.29.1 has traffic amplification in cmdmon protocol
Affected products
-
- Version Fixed in 1.29.1StatusaffectedConstraints-
- Version
Configuration 1
- < 1.29
Configuration 2
OR
- 8.0
- 9.0
- 10.0
Configuration 3
OR
- 19
- 20
No data.
Red Hat Enterprise Linux 7
chrony
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | chrony | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.80% 0.03801
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.03801
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.80% (0.03801) | 89.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.80% (0.03801) | 88.59th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.37% (0.02365) | 83.50th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.01% (0.04006) | 87.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.70% (0.02699) | 90.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.38% (0.02377) | 88.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (15)
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127837.html x_refsource_MISCMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128753.html x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/01/17/9 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/01/18/1 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/01/18/2 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/01/18/3 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/01/19/1 x_refsource_MISCMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/65035 x_refsource_MISCThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2014-0021 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1054790 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-0021 x_refsource_MISCIssue TrackingThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/90925 x_refsource_MISCThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2014-0021
- https://security-tracker.debian.org/tracker/CVE-2014-0021 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2014-0021
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Nov 15, 2019
Updated Aug 6, 2024
Reserved Dec 3, 2013
Link CVE-2014-0021
CISA Vulnrichment
Updated n/a