synced 12 MIN AGO
01 Record

CVE-2016-1548

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

UnratedPUBLISHEDCNA: certcc
CNA base scoreUnratedNo CNA CVSS vector

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.81% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.7% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2017-01-06 21:00Z9 YR AGO
Last updated
2024-08-05 23:02Z2 YR AGO
Reserved
2016-01-07
Assigning CNA
certcc
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
97339dd013af0939beabfeabfd9cada75f93782a262b51ffb1a69b91e76841e1

05 Affected products

VendorProductVersionsPlatforms
NTP ProjectNTP4.2.8p4—
NTPsec ProjectNTPSecaa48d001683e5b791a743ec9c575aaf7d867a2b0c—

06 References

07 Fixed in

Debian 11

  • ntp
    Fixed in 1:4.2.8p7+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • ntp
    Fixed in 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • ntp
    Fixed in 1:4.2.8p4+dfsg-3ubuntu5.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.