CVE-2016-1548

NTP Project NTP

HIGH 7.2

At a glance

Source
NVD
EPSS
EPSS 3.81 % · percentile 90 ()
State
PUBLISHED
Published
Updated
Assigner
certcc
NVD status
Modified

Description

An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.0HIGH 7.2CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:LNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 6.4AV:N/AC:L/Au:N/C:N/I:P/A:PNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
NTP Project · NTPaffected 4.2.8p4
NTPsec Project · NTPSecaffected aa48d001683e5b791a743ec9c575aaf7d867a2b0c

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD