Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2016-9311

NULL Pointer Dereference

Published: Jan 13, 2017 | Modified: Apr 20, 2025
CVSS 3.x
5.9
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.1 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C
RedHat/V2
4.3 MODERATE
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V3
5.9 MODERATE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-9311
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

Name Vendor Start Version End Version
Ntp Ntp * 4.2.8 (including)
Red Hat Enterprise Linux 6 RedHat ntp-0:4.2.6p5-10.el6_8.2 *
Red Hat Enterprise Linux 7 RedHat ntp-0:4.2.6p5-25.el7_3.1 *
Ntp Ubuntu esm-infra-legacy/trusty *
Ntp Ubuntu esm-infra/xenial *
Ntp Ubuntu precise *
Ntp Ubuntu trusty *
Ntp Ubuntu trusty/esm *
Ntp Ubuntu upstream *
Ntp Ubuntu vivid/stable-phone-overlay *
Ntp Ubuntu xenial *
Ntp Ubuntu yakkety *

Potential Mitigations

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2025 Aqua Security Software Ltd.   Privacy Policy | Terms of Use