Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Researchers and vendors have conducted an investigation into volumetric DDoS attacks in the wild between August – October 2023 that has resulted in the discovery of a novel “rapid reset” technique that leverages stream multiplexing, a feature of the widely-adopted HTTP/2 protocol. Disclosed today, the HTTP/2 rapid reset vulnerability is being tracked as CVE-2023-44487 and has been designated a High severity vulnerability with a CVSS score of 7.5 (out of 10).

In the world of cybersecurity, zero-day vulnerabilities, zero-day attacks, and zero-day exploits keep many CISOs up at night. These terms, often shrouded in mystery and intrigue, denote a significant risk to digital systems and the sensitive data they hold. Understanding the intricacies of zero-day vulnerabilities and the exploits that leverage them is crucial for individuals, organizations, and governments seeking to fortify their defenses against cyber threats.

Knowing what vulnerabilities interest malicious actors is a critical step in assessing the risk of vulnerabilities found in your environment. On August 3rd, CISA released their Top Routinely Exploited Vulnerabilities report for the year 2022 and inside comes little surprise as to most of the culprits. Bugs tied to ransomware incidents continue to dominate the eyes of the agencies behind these joint advisories in hopes that the number of complete owns will diminish.

Earlier today, Cloudflare, along with Google and Amazon AWS, disclosed the existence of a novel zero-day vulnerability dubbed the “HTTP/2 Rapid Reset” attack. This attack exploits a weakness in the HTTP/2 protocol to generate enormous, hyper-volumetric Distributed Denial of Service (DDoS) attacks.

The Open Web Application Security Project (OWASP) has published the latest edition of its API Security Top Ten, which was first published in 2019. The Top Ten is a significant daughter list of the OWASP Top Ten, which is one of the most definitive lists of the most severe web application risks. Why is this important? What are its main findings? And what does this mean for application security?

On Wednesday, October 4th 2023, Daniel Stenberg, one of Curl’s core maintainers announced that a forthcoming release of Curl, version 8.4.0, is scheduled to be available on October 11th 2023 at approximately 06:00 UTC. The upcoming release will include fixes for two Curl vulnerabilities that they had discovered. One of these vulnerabilities is rated as having low severity (CVE-2023-38546), whereas the second one is considered high severity (CVE-2023-38545).

On October 4, 2023, the curl project maintainers sent out a pre-notification that curl version 8.4.0, expected to be released on October 11 (around 06:00 UTC), will address what they denote as the most serious vulnerability in recent years. Curl is a de-facto standard in the software business when it comes to web requests, and supports a wide range of communication protocols. Depending on the vulnerability, it could have far reaching implications.

Most enterprises' critical infrastructure and operational pipelines rely on an intricate web of software, online services, and cloud applications. This level of complexity makes supply chain risk management one of (if not the) biggest challenges for CISOs today. Today, malicious actors choose to exploit software supply chain vulnerabilities rather than just target end users. These SSC attacks have caused some of the most notable cybersecurity incidents and data breaches in recent years.