Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Cloud

6/13/2018
06:42 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

DDoS Amped Up: DNS, Memcached Attacks Rise

China and the US are the world's leading sources of distributed denial-of-service botnet attacks.

Record-breaking distributed denial-of-service (DDoS) attacks are on a tear this year, and new data shows that DNS amplification attacks have jumped 700% worldwide since 2016.

In the first quarter of 2018, some 55 DNS amplification attacks employed Memcached servers, according to Nexusguard's Q1 data. This year Memcached servers became the new darling of botnet operators looking for a way to jack up their DDoS attacks. Memcached is an open source software program used to increase server performance; designed for internal networks, it caches data in system memory.

But many organizations leave their Memcached servers with public Internet exposure; DDoS attackers are snapping them up for their dirty work because they are so powerful and provide volumetric DDoS traffic via even low bandwidth connections. Memcached can generate amplified DDoS attacks by a factor of 51,000 times other DNS amp attacks, according to Nexusguard. 

Earlier this year Githu suffered a Memcached-born DDoS attack that hit 1.35TB. But that record was broken a week later by a 1.7TB DDoS that used Memcached servers against an undisclosed US service provider.

Juniman Kasman, CTO of Nexusguard, says amplification-style DDoS attacks are here to stay. "Cyberattackers continue to seek new vulnerabilities to pursue more firepower, launching more amplification attacks through unguarded Memcached servers and poorly configured DNSSEC-enabled DNS servers the past two quarters, and we expect this trend to continue," he said in a statement.

By far, DNS amplification was the top DDoS attack in Q1, with 4,791 attacks, followed by UDP (1,806 attacks) and ICMP (1,608 attacks). 

Overall, multivector DDoS attacks that combine DNS, network time protocol (NTP), universal datagram protocol (UDP), and other protocols to amplify the attack are the most common. These attacks accounted for more than half of all DDoS botnets in the first quarter, according to the report.

China was the No. 1 source of DDoS attacks, with 15.2%, followed by the US, with 14.2%.

Related Content:

 

Top industry experts will offer a range of information and insight on who the bad guys are – and why they might be targeting your enterprise. Click for more information

Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Mobile Banking Malware Up 50% in First Half of 2019
Kelly Sheridan, Staff Editor, Dark Reading,  1/17/2020
Active Directory Needs an Update: Here's Why
Raz Rafaeli, CEO and Co-Founder at Secret Double Octopus,  1/16/2020
New Attack Campaigns Suggest Emotet Threat Is Far From Over
Jai Vijayan, Contributing Writer,  1/16/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
The Year in Security: 2019
This Tech Digest provides a wrap up and overview of the year's top cybersecurity news stories. It was a year of new twists on old threats, with fears of another WannaCry-type worm and of a possible botnet army of Wi-Fi routers. But 2019 also underscored the risk of firmware and trusted security tools harboring dangerous holes that cybercriminals and nation-state hackers could readily abuse. Read more.
Flash Poll
How Enterprises are Attacking the Cybersecurity Problem
How Enterprises are Attacking the Cybersecurity Problem
Organizations have invested in a sweeping array of security technologies to address challenges associated with the growing number of cybersecurity attacks. However, the complexity involved in managing these technologies is emerging as a major problem. Read this report to find out what your peers biggest security challenges are and the technologies they are using to address them.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-5216
PUBLISHED: 2020-01-23
In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.9.0, 5.2.0, and 6.3.0. If user-supplied input was passed into append/override_content_security_policy_directives, a newline could be injected leading to limited header injection. Upon seei...
CVE-2020-5217
PUBLISHED: 2020-01-23
In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could b...
CVE-2020-5223
PUBLISHED: 2020-01-23
In PrivateBin versions 1.2.0 before 1.2.2, and 1.3.0 before 1.3.2, a persistent XSS attack is possible. Under certain conditions, a user provided attachment file name can inject HTML leading to a persistent Cross-site scripting (XSS) vulnerability. The vulnerability has been fixed in PrivateBin v1.3...
CVE-2019-20399
PUBLISHED: 2020-01-23
A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.
CVE-2020-7915
PUBLISHED: 2020-01-22
An issue was discovered on Eaton 5P 850 devices. The Ubicacion SAI field allows XSS attacks by an administrator.