Security Experts:

Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Application Security

Cloudflare Battles 2 Tbps DDoS Attack Launched by Mirai Botnet

Web security services provider Cloudflare says it mitigated a distributed denial-of-service (DDoS) attack that peaked at almost 2 terabytes per second (Tbps).

Web security services provider Cloudflare says it mitigated a distributed denial-of-service (DDoS) attack that peaked at almost 2 terabytes per second (Tbps).

The multi-vector assault was launched by a botnet of approximately 15,000 machines infected with a variant of the original Mirai malware. The bots included Internet of Things (IoT) devices and GitLab instances, Cloudflare said in a new report.

GitLab instances ensnared into the botnet are affected by CVE-2021-22205, a critical (CVSS score of 10) vulnerability that was patched more than six months ago, but which continues to expose tens of thousands of systems.

The 2 Tbps DDoS attack only lasted one minute. The assault combined DNS amplification and UDP floods, company said.

[ READ: ‘BotenaGo’ Malware Targets Routers, IoT Devices with Over 30 Exploits ]

Cloudflare notes that it observed an overall increase  in the number of terabit-strong DDoS attacks over the last quarter, and that network-layer incidents were up 44% quarter-over-quarter.

The trends appear to continue into the fourth quarter of the year as well, with multiple terabit-strong attacks already hitting Cloudflare’s infrastructure.

In August, the web protection firm said it observed a Mirai-variant botnet launching multiple 1Tbps attacks, some peaking at 1.2 Tbps.

Last month, Microsoft said in August it mitigated a massive 2.4 Tbps assault originating from 70,000 sources worldwide. Last year, Amazon and Google said they mitigated 2.3 Tbps and 2.5 Tbps DDoS attacks, respectively.

Related: Operator of ‘DownThem’ DDoS Attack Service Convicted

Related: Mēris Botnet Flexes Muscles With 22 Million RPS DDoS Attack

Related: Organizations Warned: STUN Servers Increasingly Abused for DDoS Attacks

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Expert Insights

Related Content

Application Security

Cycode, a startup that provides solutions for protecting software source code, emerged from stealth mode on Tuesday with $4.6 million in seed funding.

Data Breaches

GoTo said an unidentified threat actor stole encrypted backups and an encryption key for a portion of that data during a 2022 breach.

Network Security

NSA publishes guidance to help system administrators identify and mitigate cyber risks associated with transitioning to IPv6.

Cyberwarfare

Websites of German airports, administration bodies and banks were hit by DDoS attacks attributed to Russian hacker group Killnet

Nation-State

The North Korean APT tracked as TA444 is either moonlighting from its previous primary purpose, expanding its attack repertoire, or is being impersonated by...

Malware & Threats

Microsoft plans to improve the protection of Office users by blocking XLL add-ins from the internet.

Mobile & Wireless

Technical details published for an Arm Mali GPU flaw leading to arbitrary kernel code execution and root on Pixel 6.

Mobile & Wireless

Apple rolled out iOS 16.3 and macOS Ventura 13.2 to cover serious security vulnerabilities.