Home Routers at Core of DNS-Based DDoS Amplification Attacks

DNS providers Nominum have published new data on DNS-based DDoS amplification attacks that are using home and small office routers as a jumping off point. The provider said that in February alone, more than five million home routers were used to generate attack traffic; that number represents mor...

World's 3rd Largest Chinese Bitcoin exchange hit by 100Gbps DDoS attack

In March of this year, we saw the first ever 300 Gigabit DDoS attack, which was possible due to a DNS Reflection Amplification attack against Spamhaus. On 24 September World's 3rd Largest Bitcoin exchange BTC China, a platform where both Bitcoin and Chinese yuan are traded faced massive DDoS atta...

JVN#62507275: Multiple broadband routers may behave as open resolvers

A device that runs as a DNS cache server, which responds to any recursive DNS queries that are received is referred to as an open resolver. Multiple broadband routers may contain an issue where they may behave as open resolvers. Impact The device may be used in a DNS amplification attack and...

Massive 167Gbps DDoS attacks against Banking and Financial Institutions

DDoS attackers attempted to bring down an Banking services earlier this week using one of the largest Distributed denial of service attack using DNS reflection technique. Prolexic, the global leader in Distributed Denial of Service DDoS protection services, announced that it has successfully...

Massive 167Gbps DDoS attacks against Banking and Financial Institutions

DDoS attackers attempted to bring down an Banking services earlier this week using one of the largest Distributed denial of service attack using DNS reflection technique. Prolexic, the global leader in Distributed Denial of Service DDoS protection services, announced that it has successfully...

DNS Amplification Attacks (UDP) - Active Check

A misconfigured Domain Name System DNS server can be exploited to participate in a Distributed Denial of Service DDoS attack. SPDX-FileCopyrightText: 2013 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...

Millions of WordPress sites exploitable for DDoS Attacks using Pingback mechanism

Distributed Denial of Service attacks have increased in scale, intensity and frequency. The wide range of motives for these attacks political , criminal, or social makes every merchant or organization with an online presence a potential target. Over the weekend Incapsula mitigated a unique DDoS...

Who Needs a Botnet when you have a 4 Gbps DDoS Cannon?

In recent months the DDoS world has shifted from complex small scale Botnet attacks to much larger network based DDoS attacks, perpetrated largely by hijacked web servers. How many of these hijacked servers are out there remains to be seen. However, Incapsula recently got a very good idea of just...

Who Needs a Botnet when you have a 4 Gbps DDoS Cannon?

In recent months the DDoS world has shifted from complex small scale Botnet attacks to much larger network based DDoS attacks, perpetrated largely by hijacked web servers. How many of these hijacked servers are out there remains to be seen. However, Incapsula recently got a very good idea of just...

Mandriva Linux Security Advisory : dnsmasq (MDVSA-2013:072)

Updated dnsmasq packages fix security vulnerabilities : When dnsmasq before 2.63 is used in conjunctions with certain configurations of libvirtd, network packets from prohibited networks e.g. packets that should not be passed in may be sent to the dnsmasq application and processed. This can resul...

Open DNS Resolvers Center Stage in Massive DDoS Attacks

For some perspective on what 300 Gbps of traffic represents, let’s just pretend that your company, as a potential customer, put this massive volume of bits and bytes in front of 20 of the leading Internet service providers. Chances are, all but three or four will tell you “Thanks, but no thanks, ...

Spamhaus DDoS Attacks Triple Size of Attacks on US Banks

So you thought the 100 Gbps distributed denial-of-service attacks against U.S. banks were big? Ongoing attacks against Spamhaus have three times the fury and have affected unrelated online services as collateral damage. Attackers from Dutch webhost Cyberbunker are turning on a firehose of bad...

CentOS Update for dnsmasq CESA-2013:0277 centos6

Check for the Version of dnsmasq OpenVAS Vulnerability Test CentOS Update for dnsmasq CESA-2013:0277 centos6 Authors: System Generated Check Copyright: Copyright c 2013 Greenbone Networks GmbH, http://www.greenbone.net This program is free software; you can redistribute it and/or modify it under...

CVE-2013-0198

Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from prohibited interfaces, which allows remote attackers to cause a denial of service traffic amplification via spoofed TCP based DNS queries. NOTE: this vulnerability exists because of an incomplete fix...

Medium: dnsmasq

Issue Overview: It was discovered that dnsmasq, when used in combination with certain libvirtd configurations, could incorrectly process network packets from network interfaces that were intended to be prohibited. A remote, unauthenticated attacker could exploit this flaw to cause a denial of...

Scientific Linux Security Update : dnsmasq on SL6.x i386/x86_64 (20130221)

It was discovered that dnsmasq, when used in combination with certain libvirtd configurations, could incorrectly process network packets from network interfaces that were intended to be prohibited. A remote, unauthenticated attacker could exploit this flaw to cause a denial of service via DNS...

RedHat Update for dnsmasq RHSA-2013:0277-02

Check for the Version of dnsmasq OpenVAS Vulnerability Test RedHat Update for dnsmasq RHSA-2013:0277-02 Authors: System Generated Check Copyright: Copyright c 2013 Greenbone Networks GmbH, http://www.greenbone.net This program is free software; you can redistribute it and/or modify it under the...

RHEL 6 : dnsmasq (RHSA-2013:0277)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2013:0277 advisory. The dnsmasq packages contain Dnsmasq, a lightweight DNS Domain Name Server forwarder and DHCP Dynamic Host Configuration Protocol server. It was...

Researchers Find Flaw in Dirt Jumper Bot

A team of researchers has discovered a weakness in the command-and-control infrastructure of one of the major DDoS toolkits, Dirt Jumper, that enables them to stop attacks that are in progress. The discovery gives the researchers the ability to access the back-end servers that control the attack...

WikiLeaks Back Online after Sustained DDoS Attack

The controversial document-sharing site WikiLeaks was back online Monday evening after sustaining a week-long distributed denial-of-service attack. The organization apparently received some extra capacity and assistance from Web performance and security firm Cloudfare to counter the 10 gigabits p...