In a remarkable display of cybersecurity resilience, tech giants Cloudflare, Google, and Amazon have successfully mitigated what they describe as the largest DDoS (Distributed Denial of Service) layer 7 attacks ever recorded. These attacks, which occurred in August and September, were made possible due to a zero-day vulnerability in the HTTP\/2 protocol, dubbed “HTTP\/2 Rapid Reset.”<\/p>\n
HTTP\/2 is a pivotal piece of internet infrastructure that governs how most websites operate, speeding up page loading by allowing multiple simultaneous requests to a website over a single connection. The attackers exploited this feature by sending and immediately canceling hundreds of thousands of requests to websites that use HTTP\/2, overwhelming servers and taking them offline.<\/p>\n
Google recorded the heaviest assault at over 398 million requests per second, more than seven times larger than any such attack it has recorded before. Cloudflare and Amazon also experienced record-breaking attacks, with peaks of 201 million and 155 million requests per second, respectively.<\/p>\n
Despite the unprecedented scale of these attacks, the impact was minimal. Google’s global load balancing infrastructure largely stopped the incidents at the edge of their network, preventing any outages. Similarly, Amazon and Cloudflare successfully fended off the attacks, ensuring uninterrupted service for their customers.<\/p>\n
In response to these attacks, the companies coordinated a cross-industry response, sharing intelligence and mitigation strategies with other cloud providers and software maintainers. This collaborative effort led to the development of patches and mitigation techniques that most large infrastructure providers have already adopted.<\/p>\n
The vulnerability exploited by the attackers has been tracked as CVE-2023-44487. All providers who have HTTP\/2 services are urged to assess their exposure and apply security patches as soon as possible. Each of the three companies has implemented new features into their own platforms to mitigate some of the technical aspects of the attack patterns.<\/p>\n
While the patches are on their way, until they’re widely installed, the threat of similar attacks remains. Most companies don’t have the resources needed to deal with such attacks, and need extensive and powerful network DDoS defensive services such as Amazon CloudFront, AWS Shield, Google Cloud Armor, or CloudFlare Magic Transit to fend off Rapid Reset attackers.<\/p>\n
These record-breaking DDoS attacks serve as a stark reminder of the evolving cybersecurity landscape. As the security saying goes, “Security isn’t a product, it’s a process.” The collaborative response from Cloudflare, Google, and Amazon demonstrates the importance of industry-wide cooperation in the face of such threats. As we continue to rely heavily on digital infrastructure, the need for robust cybersecurity measures and rapid response to vulnerabilities becomes increasingly critical.<\/p>\n","protected":false},"excerpt":{"rendered":"
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