CVE-2016-4954

Published: Jul 5, 2016Updated: May 6, 2026 Sources: CVE List NVD csafCWE-362

7.5HIGH

NVD MITRE

Description

The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-362

Affected Products

suse

commercial·DE

managerOn-premOS

Operating Systems / linux-distro

manager proxyOn-premNetwork Device

Networking Infrastructure / load-balancer-proxy

openstack cloudOn-prem

Cloud & SaaS / cloud-platform

linux enterprise desktopOn-premOS

Operating Systems / linux-distro

linux enterprise serverOn-premOS

Operating Systems / linux-distro

siemens

commercial·DEaka siemens ag

simatic net cp 443-1 opc ua firmware

ICS / OT / IoT

tim 4r-ie firmware

ICS / OT / IoT

tim 4r-ie dnp3 firmware

ICS / OT / IoT

opensuse

oss-project·DE

leapOn-premOS

Operating Systems / linux-distro

opensuseOn-premOS

Operating Systems / linux-distro

ntp

oss-projectaka ntp daemon

ntpOn-prem

Networking Infrastructure / dns-dhcp-ntp

oracle

commercial·USaka oracle corp.

solarisOS

Operating Systems / unix-bsd

and 1 more affected products View all →

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

Official Patch Available

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

View detailed technique mapping

References

http://bugs.ntp.org/3044

bugs.ntp.org

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html

lists.opensuse.org

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html

lists.opensuse.org

and 42 more references View all →

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