CVE-2016-4953

CWE-287 — Improper Authentication9 documents9 sources
Severity
7.5HIGH
EPSS
14.4%
top 5.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
NTP NTPOpensuse LeapOpensuse Opensuse+6 more
Timeline
PublishedJul 5
Latest updateMay 13

Description

ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages10 packages

▶NVDntp/ntp4.2.0 — 4.2.8+2
▶Debianntp< 1:4.2.8p8+dfsg-1
▶NVDsuse/manager2.1
▶NVDopensuse/leap42.1
▶NVDoracle/solaris10, 11.3+1

Patches

Patch: support.ntp.org ↗Patch: support.ntp.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-26jw-7mv6-89rj: ntpd in NTP 4↗2022-05-13
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OSV
CVE-2016-4953: ntpd in NTP 4↗2016-07-05
▶
CVEList
CVE-2016-4953: ntpd in NTP 4↗2016-07-05
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📋Vendor Advisories

4
BSD
FreeBSD-SA-16:24.ntp: Multiple vulnerabilities of ntp↗2016-06-04
▶
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: June 2016↗2016-06-03
▶
Red Hat
ntp: bad authentication demobilizes ephemeral associations↗2016-06-02
▶
Debian
CVE-2016-4953: ntp - ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of serv...↗2016
▶

💬Community

1
Bugzilla
CVE-2016-4953 ntp: bad authentication demobilizes ephemeral associations↗2016-05-30
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