CVE-2016-7427 — Uncontrolled Resource Consumption in NTP

CWE-400 — Uncontrolled Resource ConsumptionCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-20 — Improper Input ValidationCWE-39913 documents9 sources
Severity
4.3MEDIUMNVD
OSV5.9
EPSS
5.3%
top 9.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
NTPDebian NTP
Timeline
PublishedJan 13
Latest updateMay 14

Description

The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.

CVSS vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 2.8 | Impact: 1.4

Affected Packages4 packages

▶debiandebian/ntp< ntp 1:4.2.8p9+dfsg-1 (bullseye)
▶Debianntp/ntp< 1:4.2.8p9+dfsg-1
▶Ubuntuntp/ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11+1
▶NVDntp/ntp4.2.8

🔴Vulnerability Details

3
GHSA
GHSA-mr7q-6qv6-frx4: The broadcast mode replay prevention functionality in ntpd in NTP before 4↗2022-05-14
▶
OSV
ntp vulnerabilities↗2017-07-05
▶
OSV
CVE-2016-7427: The broadcast mode replay prevention functionality in ntpd in NTP before 4↗2017-01-13
▶

📋Vendor Advisories

7
Ubuntu
NTP vulnerabilities↗2019-01-23
▶
Ubuntu
NTP vulnerabilities↗2017-07-05
▶
BSD
FreeBSD-SA-16:39.ntp: Multiple vulnerabilities of ntp↗2016-12-22
▶
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016↗2016-11-23
▶
Red Hat
ntp: Broadcast Mode Replay Prevention DoS↗2016-11-21
▶

💬Community

2
Bugzilla
CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]↗2016-11-22
▶
Bugzilla
CVE-2016-7427 ntp: Broadcast Mode Replay Prevention DoS↗2016-11-22
▶