CVE-2016-4955

CWE-362 — Race Condition11 documents10 sources
Severity
5.9MEDIUM
EPSS
1.9%
top 16.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
NTP NTPNovell Suse ManagerOpensuse Leap+6 more
Timeline
PublishedJul 5
Latest updateMay 13

Description

ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6

Affected Packages10 packages

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

Patches

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

🔴Vulnerability Details

3
GHSA
GHSA-c9r5-4837-463p: ntpd in NTP 4↗2022-05-13
▶
CVEList
CVE-2016-4955: ntpd in NTP 4↗2016-07-05
▶
OSV
CVE-2016-4955: ntpd in NTP 4↗2016-07-05
▶

📋Vendor Advisories

5
Ubuntu
NTP vulnerabilities↗2016-10-05
▶
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: autokey association reset↗2016-06-02
▶
Debian
CVE-2016-4955: ntp - ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers...↗2016
▶

💬Community

2
Bugzilla
CVE-2015-8139 CVE-2016-4954 CVE-2016-4955 CVE-2016-4956 ntp: various flaws [fedora-all]↗2016-06-02
▶
Bugzilla
CVE-2016-4955 ntp: autokey association reset↗2016-05-30
▶