New HTTP/2 DoS attack can crash web servers with a single connection
Newly discovered HTTP/2 protocol vulnerabilities called
HTTP/2 CONTINUATION Flood: Technical Details
Deep technical analysis of the
CONTINUATION Flood: a class of vulnerabilities within numerous HTTP/2 protocol implementations. In many cases, it poses a more severe threat compared to the Rapid Reset: a single machine (and in certain instances, a mere single TCP connection or a handful of frames) has the potential to disrupt server availability, with consequences ranging from server crashes to substantial performance degradation. Remarkably, requests that constitute an attack are not visible in HTTP access logs. **A simplified security advisory and the list of affected projects can be found in: http2-continuation-flood
HTTP/2 Rapid Reset: deconstructing the record-breaking attack
This post dives into the details of the HTTP/2 protocol, the feature that attackers exploited to generate the massive Rapid Reset attacks, and the mitigation strategies we took to ensure all our customers are protected