CVE-2016-7426
Summary
| CVE | CVE-2016-7426 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-01-13 16:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-400 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:M/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Network Time Foundation Publishes NTP 4.2.8p9 Security Release | af854a3a-2127-422b-91ae-364da2661108 | nwtime.org | Third Party Advisory |
| Vulnerability Note VU#633847 - NTP.org ntpd contains multiple denial of service vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| Broadcom Support Portal | af854a3a-2127-422b-91ae-364da2661108 | bto.bluecoat.com | Third Party Advisory |
| support.ntp.org/bin/view/Main/SecurityNotice | af854a3a-2127-422b-91ae-364da2661108 | support.ntp.org | Release Notes, Vendor Advisory |
| Document Display | HPE Support Center | af854a3a-2127-422b-91ae-364da2661108 | h20566.www2.hpe.com | Third Party Advisory |
| support.ntp.org/bin/view/Main/NtpBug3071 | af854a3a-2127-422b-91ae-364da2661108 | support.ntp.org | Issue Tracking, Mitigation, Vendor Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | Third Party Advisory |
| ntp Multiple Bugs Let Remote Users Cause the Target Service to Crash - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| USN-3707-2: NTP vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | Third Party Advisory |
| security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc | af854a3a-2127-422b-91ae-364da2661108 | security.FreeBSD.org | Third Party Advisory |
| NTP CVE-2016-7426 Local Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 378199 Virtuozzo Linux Security Update for ntp (VZLSA-2017:0252)