CVE-2016-9311 — NULL Pointer Dereference in NTP

CWE-476 — NULL Pointer DereferenceCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-20 — Improper Input ValidationCWE-39913 documents9 sources
Severity
5.9MEDIUMNVD
EPSS
4.8%
top 10.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
NTPDebian NTP
Timeline
PublishedJan 13
Latest updateMay 14

Description

ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6

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-fwm3-rx8m-qmv5: ntpd in NTP before 4↗2022-05-14
▶
OSV
ntp vulnerabilities↗2017-07-05
▶
OSV
CVE-2016-9311: 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: Null pointer dereference when trap service is enabled↗2016-11-21
▶

💬Community

2
Bugzilla
CVE-2016-9311 ntp: Null pointer dereference when trap service is enabled↗2016-11-24
▶
Bugzilla
CVE-2016-7426 CVE-2016-7429 CVE-2016-7433 CVE-2016-9310 CVE-2016-9311 ntp: various flaws [fedora-all]↗2016-11-22
▶