Security News

'Once again, we've lost a little more faith in the internet,' researcher says Researchers are publicizing a proof of concept (PoC) exploit for what they're calling an unauthenticated remote code...

Cybersecurity researchers have warned of ongoing phishing campaigns that abuse refresh entries in HTTP headers to deliver spoofed email login pages that are designed to harvest users' credentials....

Newly discovered HTTP/2 protocol vulnerabilities called "CONTINUATION Flood" can lead to denial of service attacks, crashing web servers with a single TCP connection in some implementations. HTTP/2 is an update to the HTTP protocol standardized in 2015, designed to improve web performance by introducing binary framing for efficient data transmission, multiplexing to allow multiple requests and responses over a single connection, and header compression to reduce overhead. The new CONTINUATION Flood vulnerabilities were discovered by researcher Barket Nowotarski, who says that it relates to the use of HTTP/2 CONTINUATION frames, which are not properly limited or checked in many implementations of the protocol.

New research has unveiled a vulnerability within the HTTP/2 protocol, known as HTTP/2 CONTINUATION Flood, that allows for denial-of-service (DoS) attacks. This issue, discovered by security researcher Bartek Nowotarski and reported to CERT/CC on January 25, 2024, arises from improper handling of CONTINUATION frames—a component used to transmit extended header lists within a single stream. CERT/CC's advisory highlights that attackers exploiting this vulnerability could send continuous CONTINUATION frames without concluding them with an END_HEADERS flag, leading to potential server crashes or significant performance drops due to out-of-memory conditions or CPU exhaustion.

The Tor Project officially introduced WebTunnel, a new bridge type specifically designed to help bypass censorship targeting the Tor network by hiding connections in plain sight. Tor bridges are relays not listed in the public Tor directory that keep the users' connections to the network hidden from oppressive regimes.

Planning portal back online with a more secure connection Reading Borough Council has securely restored its planning portal after facing criticism for recommending questionable tech security...

One of the requirements of eIDAS 2.0 is that browser makers trust government-approved Certificate Authorities and do not implement security controls beyond those specified by the European Telecommunications Standards Institute. When a browser visits that site, the website presents a public portion of its CA-issued certificate to the browser, and the browser checks the cert was indeed issued by one of the CAs it trusts, using the root certificate, and is correct for that site.

Cloudflare on Thursday said it mitigated thousands of hyper-volumetric HTTP distributed denial-of-service (DDoS) attacks that exploited a recently disclosed flaw called HTTP/2 Rapid Reset, 89 of...

Cloudflare says the number of hyper-volumetric HTTP DDoS attacks recorded in the third quarter of 2023 surpasses every previous year, indicating that the threat landscape has entered a new chapter. A Cloudflare report shared with BleepingComputer reveals that, during Q3 2023, the internet company mitigated thousands of hyper volumetric HTTP DDoS attacks.

Find out what security teams should do now, and hear what Cloudflare's CEO has to say about this DDoS. Google, AWS and Cloudflare have reported the exploitation of a zero-day vulnerability named HTTP/2 Rapid Reset and tracked as CVE-2023-44487, which is currently used in the wild to run the largest Distributed Denial of Service attack campaigns ever seen. The HTTP/2 Rapid Reset attack works by leveraging HTTP/2's stream cancellation feature: The attacker sends a request and cancels it immediately.