CVE-2016-7431 — Improper Input Validation in NTP

CWE-20 — Improper Input ValidationCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-39913 documents10 sources
Severity
5.3MEDIUMNVD
OSV5.9
EPSS
18.6%
top 4.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
NTPDebian NTP
Timeline
PublishedJan 13
Latest updateMay 13

Description

NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | 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-27gj-3475-hjqq: NTP before 4↗2022-05-13
▶
OSV
ntp vulnerabilities↗2017-07-05
▶
OSV
CVE-2016-7431: NTP before 4↗2017-01-13
▶

📋Vendor Advisories

7
CISA ICS
Siemens SIMATIC NET CP 443-1 OPC UA↗2021-06-08
▶
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: Zero Origin timestamp regression↗2016-11-21
▶

💬Community

2
Bugzilla
CVE-2016-7431 ntp: Zero Origin timestamp regression↗2016-11-22
▶
Bugzilla
CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]↗2016-11-22
▶