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...

Rockwell Automation Stratix NAK to the Future: NTP Symmetric Association Authentication Bypass (CVE-2015-7871)

Multiple Cisco products incorporate a version of the ntpd package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to create a denial of service DoS condition or modify the time being advertised by a device acting as a...

openSUSE Security Update : ntp (openSUSE-2016-649)

This update for ntp fixes the following issues : - Update to 4.2.8p7 boo977446 : - CVE-2016-1547, boo977459: Validate crypto-NAKs, AKA: CRYPTO-NAK DoS. - CVE-2016-1548, boo977461: Interleave-pivot - CVE-2016-1549, boo977451: Sybil vulnerability: ephemeral association attack. - CVE-2016-1550,...

Ubuntu 14.04 LTS : NTP vulnerabilities (USN-2783-1)

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2783-1 advisory. Aleksis Kauppinen discovered that NTP incorrectly handled certain remote config packets. In a non-default configuration, a remote authenticated attacker...

NTP Servers Symmetric Association Authentication Bypass (CVE-2015-7871)

A logical flaw exists in NTP servers when handling certain crypto-NAK packets, allowing attackers to bypass the target server's authentication. A remote attacker can leverage this flaw by sending a specially crafted request, and manipulate the server system's time...

NAK to the Future: NTP Symmetric Association Authentication Bypass Vulnerability

Talos Vulnerability Report TALOS-2015-0069 NAK to the Future: NTP Symmetric Association Authentication Bypass Vulnerability October 21, 2015 CVE Number CVE-2015-7871 Summary Unauthenticated off-path attackers can force ntpd processes to peer with malicious time sources of the attacker’s choosing...

[SECURITY] [DLA 192-1] ntp security update

Package : ntp Version : 1:4.2.6.p2+dfsg-1+deb6u3 CVE ID : CVE-2015-1798 CVE-2015-1799 Debian Bug : 782095 Brief introduction CVE-2015-1798 When ntpd is configured to use a symmetric key to authenticate a remote NTP server/peer, it checks if the NTP message authentication code MAC in received...

chrony: denial of service

CVE-2015-1853 denial of service: This issue is similiar to the "ntp CVE-2015-1799"-issue. An attacker knowing that NTP hosts A and B are peering with each other symmetric association can send a packet to host A with source address of B which will set the NTP state variables on A to the values sen...