CVE-2016-1551
Summary
| CVE | CVE-2016-1551 |
|---|---|
| State | PUBLISHED |
| Assigner | certcc |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-01-27 17:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference clocks are treated like other peers and stored in the same structure, any packet with a source ip address of a reference clock (127.127.1.1 for example) that reaches the receive() function will match that reference clock's peer record and will be treated as a trusted peer. Any system that lacks the typical martian packet filtering which would block these packets is in danger of having its time controlled by an attacker. |
Risk And Classification
Primary CVSS: v3.0 3.7 LOW from [email protected]
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Problem Types: CWE-254 | unspecified
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 3.7 | LOW | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 2.0 | [email protected] | Primary | 2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
HighAuthentication
NoneConfidentiality
NoneIntegrity
PartialAvailability
NoneAV:N/AC:H/Au:N/C:N/I:P/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | NTP Project | NTP | affected 4.2.8p3 | Not specified |
| CNA | NTP Project | NTP | affected 4.2.8p4 | Not specified |
| CNA | NTPsec Project | NTPSec | affected 3e160db8dc248a0bcb053b56a80167dc742d2b74 | Not specified |
| CNA | NTPsec Project | NTPSec | affected a5fb34b9cc89b92a8fef2f459004865c93bb7f92 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Cisco Talos - Talos 2016 0132 | af854a3a-2127-422b-91ae-364da2661108 | www.talosintelligence.com | Third Party Advisory |
| April 2016 Network Time Protocol Daemon (ntpd) Vulnerabilities in Multiple NetApp Products | NetApp Product Security | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | |
| security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc | af854a3a-2127-422b-91ae-364da2661108 | security.FreeBSD.org | |
| NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| ntp Multiple Bugs Let Remote Users Spoof Messages, Obtain Potentially Sensitive Information, Modify Time, and Deny Service - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| NTP CVE-2016-1551 Remote Security Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| Oracle Solaris Bulletin - April 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Third Party Advisory |
| 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.
There are currently no legacy QID mappings associated with this CVE.