VIR Vulnerability Intelligence Relay

CVE-2016-7426

high
Published 2017-01-13 · Modified 2026-05-13
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CVSS v3
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.5

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.

Predictions

Exploit likelihood
83%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
suse slesaffected
arch archfixed4.2.8.p9-1
debian debianbullseyefixed1:4.2.8p9+dfsg-1
redhat rhel6.0affected
redhat rhel7.0affected
ubuntu ubuntu12.04affected

Application impact
VendorProductVersionsFixed
ntpntp{"startIncluding":"4.2.6","endExcluding":"4.2.8"}4.2.8
ntpntp4.2.5
ntpntp4.2.8
hp hpehpux-ntp{"startIncluding":"b.11.31","endExcluding":"c.4.2.8.2.0"}c.4.2.8.2.0

References

CWEs

CWE-400

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.