CacheOut flaw can’t be exploited remotely from a web browser and also doesn’t affect AMD processors. Intel yesterday released new microcode updates for affected processors that eventually turns off(TSX) on the CPUs. Researchers: It’s unlikely for Antivirus products to detect and block CacheOut attacks, and since the exploit does not leave any traces in the traditional log file, it’s also “very unlikely” to identify whether someone has exploited the flaw or not. CacheOut can leak information across multiple security boundaries, including those between hyper-threads, virtual machines, and processes, and between user space and the operating system.
Source: https://thehackernews.com/2020/01/new-cacheout-attack-leaks-data-from.html