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.

Attacks/Breaches

DDoS Attack Briefly Interrupts Online Holiday Shopping

Attack On UltraDNS was detected 'within minutes,' and shoppers were back online in an hour

A distributed denial-of-service (DDoS) attack on a major DNS service provider caused a brief hiccup in online shopping last week at some of the Web's biggest online destinations.

UltraDNS, which counts such giants as Amazon and Wal-Mart among its customers, was DDoS'd after business hours on Dec. 23, according to Amazon Web Services and other reports from victims and news outlets.

The DDoS attack created DNS resolution problems on Amazon and Wal-Mart sites, and there were reports of problems on other sites, as well. UltraDNS' parent company, Neustar, said the attack affected the company's facilities in San Jose and Palo Alto, and the effects were largely limited to California users trying to access those sites. The company confirmed an "abnormal spike in queries" took place, and it was identified as a DDoS attack.

"The denial of service attack was recognized and quickly engaged by our Network Engineering teams, who were able to apply filters and mitigate the malicious attack at 01:30 GMT," Neustar said in an online statement. "After the filters were applied, attack traffic significantly decreased in excess of 75 percent. The overall attack traffic ceased at 01:45 GMT. We are no longer seeing the attack traffic and our Network Engineering teams are continuing to investigate the source of the malicious attack to our network."

The statement says the seven other major node locations within the UltraDNS network were not interrupted during the attack, and were successfully answering queries.

The outage affected parts of Amazon's Web Services in the U.S., but not overseas, according to a Twitter message from Amazon Web strategist Jeff Bar. The DNS problems were resolved in less than an hour, he said.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message. Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
News
US Formally Attributes SolarWinds Attack to Russian Intelligence Agency
Jai Vijayan, Contributing Writer,  4/15/2021
News
Dependency Problems Increase for Open Source Components
Robert Lemos, Contributing Writer,  4/14/2021
News
FBI Operation Remotely Removes Web Shells From Exchange Servers
Kelly Sheridan, Staff Editor, Dark Reading,  4/14/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: "Elon, I think our cover's been blown."
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-31607
PUBLISHED: 2021-04-23
In SaltStack Salt 2016.9 through 3002.6, a command injection vulnerability exists in the snapper module that allows for local privilege escalation on a minion. The attack requires that a file is created with a pathname that is backed up by snapper, and that the master calls the snapper.diff function...
CVE-2021-31597
PUBLISHED: 2021-04-23
The xmlhttprequest-ssl package before 1.6.1 for Node.js disables SSL certificate validation by default, because rejectUnauthorized (when the property exists but is undefined) is considered to be false within the https.request function of Node.js. In other words, no certificate is ever rejected.
CVE-2021-2296
PUBLISHED: 2021-04-22
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromi...
CVE-2021-2297
PUBLISHED: 2021-04-22
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromi...
CVE-2021-2298
PUBLISHED: 2021-04-22
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attac...