A hacking hat-trick: previewing three Port Swigger Research publications coming to DEF CON & Black Hat USA
Summary: PortSwigger Research announced three talks for Black Hat USA and DEF CON 32: James Kettle on timing attacks that can detect a sub-millisecond differential in ten seconds, Gareth Heyes on RFC-compliant email addresses that bypass defenses and spoof domains, and Martin Doyhenard on web cache URL-parser attacks including Static Path Deception and Cache Key Confusion. Doyhenard's case studies include default-configuration breaches of Nginx behind Cloudflare and Apache behind CloudFront, and cache poisoning with full denial of service in OpenAI and Microsoft Azure Cloud. Each talk ships with a whitepaper, open-source tools, and labs or CTFs, with DEF CON recordings expected on YouTube in September.
Key Takeaway: The cache attacks work against default configurations of Nginx behind Cloudflare and Apache behind CloudFront, and reached full denial of service in OpenAI and Microsoft Azure Cloud - so the question is whether your CDN and origin pairing was ever tested against URL-parser inconsistencies rather than assumed safe.
Read the original at PortSwigger Research ↗
- Topics
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