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ACME validation had a challenge-request hole Cloudflare has fixed a flaw in its web application firewall (WAF) that allowed attackers to bypass security rules and directly access origin servers, which could lead to data theft or full server takeover.…
Outage Briefly Took Down Zoom, LinkedIn and Other WebsitesContent delivery network giant Cloudflare is investigating a brief outage early Friday that took down multiple websites. The incident marks the second outage in the span of a month, although the causes are unrelated. It stemmed from how Cloudflare's web application firewall parses requests.
Also: Fortinet Flaws, Aisuru Botnet and Dutch Police Seize Bulletproof Host ServersThis week, the root cause of the Cloudflare outage, active exploitation of Fortinet flaws, Logitech disclosed a data breach, Microsoft headed off a record-breaking botnet attack, Dutch police seized bulletproof hosting servers and Princeton University disclosed a data breach after a phishing attack.
Attackers can use a zero- or one-click flaw to send a malicious image to targets — an image that can deanonymize a user within seconds, posing a threat to journalists, activists, hackers, and others whose locations are sensitive.
A security researcher discovered a flaw in Cloudflare's content delivery network (CDN), which could expose a person's general location by simply sending them an image on platforms like Signal and Discord. [...]
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 which exceeded 100 million requests per second (RPS)
Cloudflare's Firewall and DDoS prevention can be bypassed through a specific attack process that leverages logic flaws in cross-tenant security controls. [...]