NTP NAK To The Future

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'NTP "NAK to the Future"', 'Description' = %q Crypto-NAK packets can be used to cause ntpd to accept time from unauthenticated ephemeral symmetric...

RHEL 5 : ntp (Unpatched Vulnerability)

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched. - ntp: Stack-based buffer overflow in ntpq and ntpdc allows denial of service or code execution...

K23453330: NTP vulnerability CVE-2016-4957

Security Advisory Description 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-2016-4957 Impact There is no impact; F5 products are not affected ...

K92800352: NTP vulnerability CVE-2016-4953

Security Advisory Description 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-2016-4953 Impact There is no impact; F5 products...

SUSE CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication...

SUSE 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...

Huawei EulerOS: Security Advisory for ntp (EulerOS-SA-2019-1222)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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 ifdescription...

Huawei EulerOS: Security Advisory for ntp (EulerOS-SA-2019-2066)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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 ifdescription...

EulerOS 2.0 SP3 : ntp (EulerOS-SA-2019-2066)

According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number o...

EulerOS Virtualization 3.0.1.0 : ntp (EulerOS-SA-2019-1557)

According to the versions of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - It was found that ntpd did not check whether a Message Authentication Code MAC was present in a received packet when ntpd was...

EulerOS Virtualization 3.0.1.0 : ntp (EulerOS-SA-2019-1556)

According to the versions of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A vulnerability was discovered in the NTP server's parsing of configuration directives. A remote, authenticated attacker could cause...

Denial Of Service (DoS)

ntp is vulnerable to denial of service DoS. The vulnerability exists as it is possible to send a crypto NAK packet from a spoofed source address of an associated peer...

Network Time Protocol Crypto-NAK Preemptible Association Denial of Service Vulnerability(CVE-2016-1547)

SUMMARY An off-path attacker can cause a preemptible client association to be demobilized by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. This is true even if authentication is enabled. Furthermore, if the attacker keeps sending cryp...

The vulnerability of the Crypto-NAK packages, the demon program ntpd, the Network Time Protocol NTP, allows a perpetrator to bypass the authentication process.

The vulnerability of the Crypto-NAK packages, the demon program ntpd, and the Network Time Protocol NTP are related to deficiencies in authentication procedures. Exploiting this vulnerability could allow a malicious actor to bypass authentication procedures...

CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication...

DEBIAN-CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication...

CVE-2015-7871

CVE-2015-7871 is an authentication-bypass vulnerability in ntpd caused by handling of crypto-NAK packets. A remote, unauthenticated attacker could force ntpd to peer with attacker-controlled time sources, bypassing authentication and potentially tampering time data. Affected series include NTP 4....

CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication...

CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication...

Authentication flaw

An off-path attacker can cause a preemptible client association to be demobilized in NTP 4.2.8p4 and earlier and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. This is true even if...