CVE-2017-6463 — Improper Input Validation in NTP

CWE-20 — Improper Input ValidationCWE-476 — NULL Pointer Dereference12 documents9 sources
Severity
6.5MEDIUMNVD
OSV5.9
EPSS
3.1%
top 13.09%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
NTPDebian NTPApple Macos High Sierra
Timeline
PublishedMar 27
Latest updateMay 14

Description

NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service (daemon crash) via an invalid setting in a :config directive, related to the unpeer option.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/ntp< ntp 1:4.2.8p10+dfsg-1 (bullseye)
▶Debianntp/ntp< 1:4.2.8p10+dfsg-1
▶Ubuntuntp/ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11+1
▶NVDntp/ntp95 versions+94

🔴Vulnerability Details

3
GHSA
GHSA-gmrg-j497-5g5q: NTP before 4↗2022-05-14
▶
OSV
ntp vulnerabilities↗2017-07-05
▶
OSV
CVE-2017-6463: NTP before 4↗2017-03-27
▶

📋Vendor Advisories

6
Ubuntu
NTP vulnerabilities↗2019-01-23
▶
Apple
CVE-2017-6463: macOS High Sierra 10.13↗2017-09-25
▶
Ubuntu
NTP vulnerabilities↗2017-07-05
▶
BSD
FreeBSD-SA-17:03.ntp: Multiple vulnerabilities of ntp↗2017-04-12
▶
Red Hat
ntp: Authenticated DoS via Malicious Config Option↗2017-03-21
▶

💬Community

2
Bugzilla
CVE-2017-6464 CVE-2017-6462 CVE-2017-6463 CVE-2017-6458 CVE-2017-6451 ntp: various flaws [fedora-all]↗2017-03-23
▶
Bugzilla
CVE-2017-6463 ntp: Authenticated DoS via Malicious Config Option↗2017-03-20
▶