Ticklebleed: Critical F5 security flaw removes HTTPS encryption from almost 1,000 websites

Ticklebleed: Critical F5 security flaw removes HTTPS encryption from almost 1,000 websites – The security flaw, known as Ticklebleed, was discovered by Cloudflare cryptography engineer Filippo Valsorda. Some packets – a unit of data routed between an origin and destination on the internet – sent by a Cloudflare customer using the Railgun web optimisation tool caused an error that confused Cloudflare’s Railgun TLS stack.

When Valsorda and his colleagues investigated, they realised that if you were to deliberately craft some packets and send them to a vulnerable website, they would enable a hacker to obtain small chunks of information (31 bytes) residing in the memory of connected web servers.

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