Arbor: DDoS Attacks Getting Bigger as Reflection Increases

Reflected distributed denial of service DDoS attacks continue to increase, particularly among large scale DDoS events, but it’s a relatively new type of amplification attack which exploits the Simple Service Directory Protocol SSDP that has emerged in a new Arbor Networks report. Data from the...

High-Volume, High-Rate DDoS Attacks Persist

As expected, the numbers back up the continued proliferation of both high-volume and high-rate distributed denial of service attacks – like the ones executed via NTP amplification – over the last few months. NSFOCUS, a security firm that measures DDoS traffic, released its Mid-Year Threat Report...

Network Time Protocol Vulnerabilities

OVERVIEW This updated advisory is a follow-up to the updated advisory titled ICSA-14-353-01B Network Time Protocol Vulnerabilities that was published February 4, 2015, on the NCCIC/ICS-CERT web site. Google Security Team researchers Neel Mehta and Stephen Roettger have coordinated multiple...

Juniper Junos NTP Server Amplification Remote DoS (JSA10613)

According to its self-reported version number, the remote Juniper Junos device is affected by a vulnerability in the NTP daemon related to the handling of the 'monlist' command. A remote attacker can exploit this by forging a request that results in a distributed denial of service. Note that this...

Google Public DNS Server Spoofed for SNMP based DDoS Attack

The Distributed Denial of Service DDoS attack is becoming more sophisticated and complex, and, according to security experts, the next DDoS vector to be concerned about is SNMP Simple Network Management Protocol amplification attacks. Yesterday afternoon, the SANS Internet Storm Center reported...

SNMP DDoS Attack Spoofs Google DNS Server

Update: The SANS Internet Storm Center this afternoon reported SNMP scans spoofed from Google’s public recursive DNS server seeking to overwhelm vulnerable routers and other devices that support the protocol with DDoS traffic. “The traffic is spoofed, and claims to come from Google’s DNS server...

NTP Mode 6 REQ_NONCE DRDoS Scanner

This module identifies NTP servers which permit mode 6 REQNONCE requests that can be used to conduct DRDoS attacks. In some configurations, NTP servers will respond to REQNONCE requests with a response larger than the request, allowing remote attackers to cause a distributed, reflected denial of...

NTP Mode 7 GET_RESTRICT DRDoS Scanner

This module identifies NTP servers which permit "reslist" queries and obtains the list of restrictions placed on various network interfaces, networks or hosts. The reslist feature allows remote attackers to cause a distributed, reflected denial of service aka, "DRDoS" or traffic amplification via...

NTP Mode 6 UNSETTRAP DRDoS Scanner

This module identifies NTP servers which permit mode 6 UNSETTRAP requests that can be used to conduct DRDoS attacks. In some configurations, NTP servers will respond to UNSETTRAP requests with multiple packets, allowing remote attackers to cause a distributed, reflected denial of service aka,...

NTP Mode 7 PEER_LIST_SUM DoS Scanner

This module identifies NTP servers which permit "PEERLISTSUM" queries and return responses that are larger in size or greater in quantity than the request, allowing remote attackers to cause a distributed, reflected denial of service aka, "DRDoS" or traffic amplification via spoofed requests...

NTP Mode 7 PEER_LIST DoS Scanner

This module identifies NTP servers which permit "PEERLIST" queries and return responses that are larger in size or greater in quantity than the request, allowing remote attackers to cause a distributed, reflected denial of service aka, "DRDoS" or traffic amplification via spoofed requests. Module...

openSUSE Security Update : chromium (openSUSE-SU-2014:0982-1)

Chromium was updated to version 36.0.1985.125. New Functionality : - Rich Notifications Improvements - An Updated Incognito / Guest NTP design - The addition of a Browser crash recovery bubble - Chrome App Launcher for Linux - Lots of under the hood changes for stability and performance Security...

chromium: update to 36.0.1985.125 (important)

Chromium was updated to version 36.0.1985.125. New Functionality: Rich Notifications Improvements An Updated Incognito / Guest NTP design The addition of a Browser crash recovery bubble Chrome App Launcher for Linux Lots of under the hood changes for stability and performance Security Fixes...

openSUSE: Security Advisory for chromium (openSUSE-SU-2014:0982-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2014 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...

Cisco IOS XE NTP Information Disclosure (CSCuj66318)

The remote Cisco device potentially contains an issue with the 'ntp access-group' which could allow a remote attacker to bypass the NTP access group and query an NTP server configured to deny-all requests. TRUSTED...

Cisco IOS NTP Information Disclosure (CSCuj66318)

The remote Cisco device potentially contains an issue with the 'ntp access-group' which could allow a remote attacker to bypass the NTP access group and query an NTP server configured to deny-all requests. TRUSTED...

openSUSE Security Update : ntp (openSUSE-2014-474)

The NTP time service could be used for remote denial of service amplification attacks. This issue can be fixed by the administrator as we described in our security advisory SUSE-SA:2014:001 http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00005. html and on...

openSUSE Security Update : openSUSE-2014- (openSUSE-2014--1)

The NTP time service could be used for remote denial of service amplification attacks. This issue can be fixed by the administrator as we described in our security advisory SUSE-SA:2014:001 http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00005. html and on...

Juniper Networks Junos OS NTP Server Amplification Denial of Service Vulnerability

DoS in NTP server SPDX-FileCopyrightText: 2014 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:/o:juniper:junos"; if description...

openSUSE Security Update : openSUSE-2014- (openSUSE-2014--1)

The NTP time service could be used for remote denial of service amplification attacks. This issue can be fixed by the administrator as we described in our security advisory SUSE-SA:2014:001 http://lists.opensuse.org/opensuse-security-announce/2014-01/msg00005. html and on...