In this video we explore the basic ideas behind CPU vulnerabilities and have a closer look at RIDL. This video is sponsored by Intel and their Project Circuit Breaker: https://www.projectcircuitbreaker.com/ How to Benchmark Code Execution Times: https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/ia-32-ia-64-benchmark-code-execution-paper.pdf Anders Fogh: https://cyber.wtf/2017/07/28/negative-result-reading-kernel-memory-from-user-mode/ Speculose: https://arxiv.org/abs/1801.04084 RIDL Paper: https://mdsattacks.com/files/ridl.pdf Foreshadow PoC: https://github.com/gregvish/l1tf-poc/blob/master/doit.c Sebastian Österlund: https://osterlund.xyz/ Chapters: 00:00 - Intro & Motivation 00:57 - Concept #1: CPU Caches 01:57 - Measure Cache Access Time with rdtscp 05:00 - Concept #2: Out-of-order Execution 06:11 - CPU Pipelining 07:13 - Out-of-order Execution Example 09:19 - CPU Caching + Out-of-order Execution = Attack Idea!! 10:33 - Negative Result: Reading Kernel Memory From User Mode 13:45 - Pandoras Box 14:23 - Interview with Sebastian Österlund 17:24 - Accidental RIDL Discovery 19:31 - NULL Pointer Bug 21:50 - Investigating Root Cause 23:28 - Conclusion 24:24 - Outro =[ ❤️ Support ]= → per Video: https://www.patreon.com/join/liveoverflow → per Month: null =[ 🐕 Social ]= → Twitter: https://twitter.com/LiveOverflow/ → Instagram: https://instagram.com/LiveOverflow/ → Blog: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/