[SECURITY] Fedora 26 Update: systemd-233-4.fc26

systemd is a system and service manager that runs as PID 1 and starts the rest of the system. It provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups,...

ntp: Attack on interface selection

A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source...

Citrix XenServer Multiple Security Updates (CTX220112)

Several security issues have been identified within Citrix XenServer. SPDX-FileCopyrightText: 2017 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 =...

How to Setup Time on XenServer Manually When There Is No NTP Server

This is a situation where you don't have an AD , DC ,DNS or an NTP server in the environment to point the servers for syncing time...

[SECURITY] Fedora 25 Update: ntp-4.2.6p5-43.fc25

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...

[SECURITY] Fedora 24 Update: ntp-4.2.6p5-43.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...

ntpd Denial of Service Vulnerability (CNVD-2016-11426)

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

ntpd broadcast mode replay defense denial of service vulnerability

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

ntpd Denial of Service Vulnerability (CNVD-2016-11431)

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

Local Denial of Service Vulnerability in ntpd

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

FreeBSD : FreeBSD -- Multiple ntp vulnerabilities (7cfcea05-600a-11e6-a6c3-14dae9d210b8)

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 containing a CRYPTO-NAK to...

ntp: crypto-NAK preemptable association denial of service

A denial of service flaw was found in the way NTP handled preemptable client associations. A remote attacker could send several crypto NAK packets to a victim client, each with a spoofed source address of an existing associated peer, preventing that client from synchronizing its time...

ntp: ntpd switching to interleaved mode with spoofed packets

It was found that an ntpd client could be forced to change from basic client/server mode to the interleaved symmetric mode. A remote attacker could use a spoofed packet that, when processed by an ntpd client, would cause that client to reject all future legitimate server responses, effectively...

Troubleshoot Issues that Arise When Joining StoreFront Server to a Group

Complete the following steps to troubleshoot issues that arise when joining a StoreFront server to a group. 1. Validate that all machines are on the same version of Storefront. Open the StoreFront MMC Help About Citrix StoreFront Version. 2. Confirm that all StoreFront servers have the same date...

Debian Security Advisory DSA 3629-1 (ntp - security update)

Several vulnerabilities were discovered in the Network Time Protocol daemon and utility programs: CVE-2015-7974 Matt Street discovered that insufficient key validation allows impersonation attacks between authenticated peers. CVE-2015-7977CVE-2015-7978Stephen Gray discovered that a NULL pointer...

[SECURITY] [DSA 3629-1] ntp security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3629-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff July 25, 2016 https://www.debian.org/security/faq -...

Amazon Linux AMI : ntp (ALAS-2016-708)

It was found that an ntpd client could be forced to change from basic client/server mode to the interleaved symmetric mode. A remote attacker could use a spoofed packet that, when processed by an ntpd client, would cause that client to reject all future legitimate server responses, effectively...

FreeBSD-SA-16:24.ntp

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-16:24.ntp Security Advisory The FreeBSD Project Topic: Multiple vulnerabilities of ntp Category: contrib Module: ntp Announced: 2016-06-04 Credits: Network Time...

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...

Unspecified vulnerability in ntpd (CNVD-2016-03821)

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 versions of ntpd prior to 4.2.8p8. An attacker can exploit this vulnerability to affect siblin...