Design/Logic Flaw

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service daemon crash via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547...

Design/Logic Flaw

The processpacket function in ntpproto.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...

CVE-2016-4955

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...

CVE-2016-4957

ntpd (NTP) before version 4.2.8p8 is vulnerable to a remote DoS via specially crafted crypto-NAK packets, causing ntpd to crash. This issue stems from an incorrect fix applied after CVE-2016-1547 and affects ntpd’s handling of CRYPTO-NAK. Public references indicate an impact to the daemon’s avail...

CVE-2016-4956

ntpd (NTP 4.x) before 4.2.8p8 is vulnerable to DoS via a spoofed broadcast packet, triggering interleaved-mode transitions and time changes. This exists due to an incomplete fix for CVE-2016-1548. Exploitation can disrupt time synchronization, with public advisories linking the issue to broadcast...

CVE-2016-4955

CVE-2016-4955 affects ntpd (NTP 4.x) prior to 4.2.8p8. When autokey is enabled, a remote attacker can cause a denial of service by sending a spoofed CRYPTO_NAK packet or a packet with an incorrect MAC at a specific time, which can trigger autokey association reset. Cloud/OS advisories confirm thi...

CVE-2016-4956

ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service interleaved-mode transition and time change via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548...

CVE-2016-4957

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service daemon crash via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547...

CVE-2016-4953

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...

CVE-2016-4954

The processpacket function in ntpproto.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...

CVE-2016-4955

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...

Network Time Protocol Daemon crypto-NAK Denial of Service (CVE-2016-4957)

A denial of service vulnerability exists in the Network Time Protocol daemon NTPD. The vulnerability is due to a null pointer dereference when handling crypto-NAK packets. A remote attacker can exploit this vulnerability by sending an unsolicited crypto-NAK packet to the target service...

CVE-2016-4956

ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service interleaved-mode transition and time change via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548...

[SECURITY] Fedora 22 Update: ntp-4.2.6p5-41.fc22

The Network Time Protocol NTP is used to synchronize a computer's time with another reference time source. This package includes ntpd a daemon which continuously adjusts system time and utilities used to query and configure the ntpd daemon. Perl scripts ntp-wait and ntptrace are in the ntp-perl...

Internet Bug Bounty: ntpd: read_mru_list() does inadequate incoming packet checks

Summary: If ntpd is configured to allow mrulist query requests from a server that sends a crafted malicious packet, ntpd will crash on receipt of that crafted malicious mrulist query packet. Mitigation: - Only allow mrulist query packets from trusted hosts. - Implement BCP-38. - Upgrade to 4.2.8p...

[SECURITY] Fedora 24 Update: ntp-4.2.6p5-41.fc24

The Network Time Protocol NTP is used to synchronize a computer's time with another reference time source. This package includes ntpd a daemon which continuously adjusts system time and utilities used to query and configure the ntpd daemon. Perl scripts ntp-wait and ntptrace are in the ntp-perl...

FreeBSD -- Multiple ntp vulnerabilities

Problem Description: Multiple vulnerabilities have been discovered in the NTP suite: The fix for Sec 3007 in ntp-4.2.8p7 contained a bug that could cause ntpd to crash. CVE-2016-4957, Reported by Nicolas Edet of Cisco An attacker who knows the origin timestamp and can send a spoofed packet...

Vulnerabilities Identified in Network Time Protocol Daemon (ntpd)

The Network Time Foundation's NTP Project has released version ntp-4.2.8p8 to address multiple vulnerabilities in ntpd. Exploitation of one of these vulnerabilities may allow a remote attacker to cause a denial-of-service condition. Users and administrators are encouraged to review Vulnerability...

Unspecified vulnerability in ntpd (CNVD-2016-03822)

ntpd Network Time Protocol daemon is an operating system daemon that uses the Network Time Protocol NTP to keep synchronized with the system time of a time server. An unspecified vulnerability exists in NTP.org ntpd versions prior to 4.2.8p8. An attacker can exploit this vulnerability by sending...

NTP.org 'ntpd' Zero Origin Timestamp Regression Vulnerability (Nov 2016)

NTP.org SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:ntp:ntp"; ifdescription scriptoid"1.3.6.1.4.1.25623.1.0.106406";...